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If the EC falls, then increase the EC of the reservoir by 0.2 points. Letting the solution sit, will allow the salts to properly dissolve and disperse through the water. Watch the EC and pH, and adjust accordingly. very enlightening, from what i see all my plants are suffering with problems and it all stems from ec from what i can gather. Get to know your plant, and understand what the EC and pH fluctuations mean. This can cause damage to your plants roots and force your plant to take more nutrients than it needs via a process called osmosis. If your pH range in coco coir is way off, flush a bunch of properly pH’d nutrient solution through your plant to get things back in line. An indicative EC range for cannabis plants is 0.8-1.3 for seedlings; 0.5-1.3 for clones; 1.3-1.7 under vegetative phase; 1.2-2 during flowering. In worst case scenarios, an EC spike can damage the roots to the extent where they can no longer take in nutrients. Plus, the salts contained in all agricultural nutrients add more ions with positive and negative electrical charges, that attract one another. But, this doesn’t mean you can push your plant full of nutrients, and hope it grows bigger, a plant can only eat a certain amount. This will change the EC and pH of the nutrient solution. Tiny changes is what is best, so you can monitor the effects. If there are sharp changes, there can be many problems that arise. When new nutrients are introduced, the ones with the weaker bond, get washed away, and the new ones replace them, and the process continues. When EC measurement is too high in the growing media and runoff, the plants are at risk. If they are not, they will build up in the coco, and you will see a salt build up. June 1-2019 As the nutrient ion is used, it loses its charge too. If it is lower than the feed you have been giving your plants, then increase the EC of the next feed by 0.2. if it is higher, than reduce the EC by 0.1. Deficiency – Have a look at the root system of the plants. Always consider, that a plant might never fully recover from a nutrient lockout or an excess of nutrients. If you go slightly over your desired EC, then add more water to dilute the solution. Cannabis pH Levels 4.0 and below: Toxic. If they are brownish in colour this is likely to be the problem. The most used scales for measuring the concentration of chemicals in water are electrical conductivity (EC) scales, and the parts per million (ppm) scale. In the chart below, you can find general guidelines for optimal EC at different life stages, however, there are differences between different nutrient lines. EC measurement is how the grower gets the most accurate reading of nutrients in feed solutions and the growing medium itself. EC: 1.0 Turn on all light if you have more and decrease the distance between the lamp and the plant to 20 inches, but make sure it doesn’t get too warm. that we can truly determine if the plants are properly fed, or if they’re suffering a deficiency or excess of nutrients. If you have any questions about finding the right EC for your cannabis plants, then feel free to ask for help in our cannabis growers forum. Keep the medium saturated, and always have at least 10% run off with every feed. As the roots form, and the plant grows bigger and heads into veg, you can monitor the feed to find the best EC. If at some point you need to flush in hydro and coco, then flush with plain water at the correct pH, but always restore the medium to the correct EC and pH straight afterwards. These readings should be taken at the same hour every day. The only countermeasure is leaching the substrate thoroughly with water, add a diluted nutrient solution, runoff, and replace with new balanced nutritive solution. If your EC levels rise too high in an active closed-circuit system, it probably means that your plants are absorbing too … Hello all! Keep constant record of EC and pH measurements. Knowing how to find the best EC for your cannabis plant will keep your plants healthy and happy throughout their whole grow, which in turn will give you a better final product. Don’t cut corners with the EC meter, get the best one you can afford, knowing the EC of your feed will keep your plants healthy and happy, it is worth investing in a good EC meter. Some hydro growers will be using a “recirculating system”, where the runoff after feeding, will be redirected into the nutrient tank (reservoir). Plants’ cells start losing water when the salt concentration is too high and the EC of the nutrient solution increases. As the plant drinks, it will take in some of the nutrients available to it. In situations like this, you can monitor the EC and pH of the reservoir, to help find the best EC for cannabis plants. Not because the mix has been made poorly, but because nutrients can alter their levels under a number of conditions. As more salts are added, the electroconductivity of the solution will rise. A low EC condition is more easily rebalanced than a high concentration of nutrients already flowing in the system. You have to find the right balance, and feed the right amount of nutrients to the plant. Coco should be kept saturated at all times to prevent EC spikes, and these need to be taken into account when testing the feed to find the best EC for your plants. Brittle leaves are the product of a high EC. Watering frequency will depend on plant size, container size, climate, lights, and relative humidity. This website uses cookies to improve your experience while you navigate through the website. when you reach that saturation point, back off at least.2 or so. If it is left to sit in trays, it can pick up old salts from them, and alter the actual EC, so your reading will be inaccurate. Got the blue labs EC meter will compare it to Monitor the EC going in, and coming out like this for a few days, and your plant will tell you what the best EC is. These cookies do not store any personal information. Hydroponic and aeroponic grow methods use direct feeding devices, which require a perfect control of the chemical compounds and values of fertilized water. This means, you want the EC and pH to come out the same as it went in, or just a little higher then it went in. This will raise the EC of the nutrient solution, but in fact, the plant is losing food. If the natural EC of tap water deviates too much of different fertilizer averages (based on an average EC of 0.4/0.5 mS), that difference in EC has to be readjusted. Place each sample in a clean jar and use a calibrated EC meter to measure each of the samples. When you grow cannabis in hydroponics, it is common to monitor the EC of your feed, and your runoff, to get a rough idea of how much your plant is eating. Throughout production you water with only clear water once every 10-14 days, depending on EC readings. This will help you feed them what they need, when they need it. 2000+ sounds great, what strain are you growing? Feeding the Plants. Water quality is very important, and requires some work. Most growers have the talent, but they lack information. Published and mixing in reservoirs ahead of time seems to take practice. The plant and the water, find balance, and there will be a certain amount of food in the plant, that is equal to that in the water. Your plant, and grow medium, will find a steady balance between each other. When your Cannabis plant is in its initial growth period, it will require a solution with an EC measuring 0.8-1.0, while during flowering the EC should be somewhere between 1.2-2. This can be done by monitoring the EC over a few days and making slight adjustments to get the balance just right. Growing cannabis in hydroponic systems like DWC, NFT, and coco, is usually done with “salt based nutrients“. If you don't know the best EC for your plant, you just have to experiment. When you have found that correct leve, you will see how much healthier your grows will be in the future. Testing EC and pH simultaneously is a good way to optimize operations. Always lower EC when external temperature increases over normal levels. When we add fertilizing compounds to tap water, these chemicals increase water electrical conductivity, and a greater concentration of nutrients in water results in a liquid, that conducts more electricity. When it does, it leaves salts behind, and can cause EC levels to rise quickly in the medium. It is important you get a good, correct reading of your feed, before it is given to the plants. Old salts will be washed out with the run off with every feed. Pure distilled water does not efficiently conduct electricity. This will improve the accuracy of the reading. Let a minimum of 20% of the nutrient solution drain from growing media after each irrigation cycle. In that case, the EC will tend to go down. You should water at least once a day! The best EC for cannabis plants, is not set in stone, and each strain, and even each phenotype will prefer different levels of EC. The plant's water needs increase during flowering and your coco watering frequency should increase as well. For the best results use a good EC meter, and let your feed sit for a few minutes after mixing before you test it. Ideally, you should plan to water your cannabis plants in coco 3-5 times per day during the flowering … The best way to find out the best EC for your cannabis plant, is by monitoring what you’re feeding the plants, against what they are giving you back in runoff. The higher the salt concentration, the greater the electrical reading. Keep the EC low unless your plant asks for more. When you find the right levels, and everything is stable, your plants will have access to the right levels of nutrients, and it will grow healthy and happily. Hydroponic mixes without media reserves require some N during the first half of flowering (usually 3-4 weeks) and less during the next quarter (10-15 days). While cannabis plants do love moisture, especially in the cloning and vegging stages, in the flowering stage you run the risk of powdery mildew on your buds with humidity anywhere about 50%. If you don’t do so, your plants will probably show deficiencies sooner or later. When you’re happy, you can adjust the pH and feed it to your plants. When your Cannabis plant is in its initial growth period, it should have an EC measuring 0.8-1.0; during flowering, the EC should be somewhere between 1.2-2. A chemical analysis of the water used for cultivation purposes is always advisable. Sometimes you may find guides across the internet that use PPM instead of EC. Firstly, you should know the EC of the feed you are giving to your plants. The EC (or ppm) values are much more important for hydroponic growers than any others. You should always start a seedling off at a very low EC. The lack of N towards the end of flowering hastens ripening and maturity. To raise the EC, add more fertilizer to the solution, or change the nutrient solution. Then you can adjust in small increments in the direction you want the EC to go. It has passed through the medium, and replaced old, used salts, with fresh new ones. If the EC of the runoff falls, to 0.7, then your plant needs more nutrients. If the BG EC is over 0.6, you should consider using reverse osmosis water, or diluting the water with mineral water to reduce it. This conductivity is measurable, and its figure shows how much fertilizer is contained in water. You can find out more about the cookies we use and learn how to manage them in our. You continue this as the plant grows, until you find a nice steady balance. Above all, the concentration of the nutrient solution directly impacts plants’ health, growth and yield. This is the EC of the water you’re going to use, before any nutrients are added to it. Stay consistent, and do it at the same time everyday, about an hour after lights come on if possible. But opting out of some of these cookies may have an effect on your browsing experience. What I do is start at 1.0 then slowly increase the EC each day by.05 or.1 until I see a little bit of nute burn (crispy leaf edges, etc.) And at night, when it’s colder, you can better manage the temperature by letting fresh, cold air into the room when it gets too warm inside. Feed the seedlings, and collect the runoff as it flows out of the pot. Clearly, cannabis plants enjoy increased parts per million as they grow. He wants to have an EC of 1.8 and thus adds 1.3 EC worth of nutrition. This is what EC is. By monitoring the EC and pH of the feed before you give it to the plants, and then monitoring the EC and pH of the runoff, you can figure out if your plant is being overfed, or under fed. As the plant drinks the water, and moisture evaporates from the pot, the salts will be left behind. Electrical conductivity is the electrical charge that moves through a solution. Lets not get too complex but, as fresh salts are added, they carry an electric current, this helps them stick to the roots, like your hair does to a balloon. Late Flowering: 1000 – 500 – 0. The problem with PPM meters, is that different models will have different readings, depending on their country of origin. This should be collected as it is coming out of the pots. NPK will change to 1-1-1 when switching to flower then 0-1-1 in later flower? Check your EC and check that your EC meter is within range (use a conductivity buffer). im feeding my plant at EC 1.65 which contains rhizotonic, cal mag, ionic bloom and ionic boost. To lower the EC level, just increase the runoff to 30% of the solution. A good EC (or ppm) measurement is made by collecting water samples from the reservoir, growing medium and runoff. If you have reduced the EC of your feed by more than 0.4 points, the first test may show a slight raise in EC before it levels off on the second test after another feeding. Example: Grower A measures an EC of 0.5 in his tap water. During and after the vegging stage, your plants will want more out of their feedings so filtering isn’t really necessary. Some commercial growers are able to pump enough nutrients into their blooming plants without causing damage. By monitoring the EC (Electro Conductivity) of your nutrient solution, you will have an idea of how much of the salt based nutrients are available to your plant, in turn you will know how much you are feeding your plant. Test this water, and find out if the EC is higher or lower than the feed going in. Less is more! Keep in mind that it is normal for leaves to turn yellow during the late flowering stage, and it is also normal for the odd leaf to turn yellow as your plant naturally defoliates. If the EC of the solution drawn from the growing medium is higher than the one from the reservoir, there might be starting a fertilizer salt build-up. Pro Tip 2: Keep humidity around 45%. There is no easy answer as the best EC will differ, depending on a lot of factors. Necessary cookies are absolutely essential for the website to function properly. Water content is always different, and the grower needs to know what type of water plants are receiving. Transpiration is an essential plant process that plays a major role in photosynthesis and the processing of carbon dioxide and carbohydrates. Each plant, from each seed, in different environments, will use their nutrients differently. I'm just curious as to how high you guys and gals get your EC during flowering. This last one is also named total dissolved solids or TDC scale. On the opposite, a low nutrient concentration causing low EC forces more water uptake from the roots. For seedlings: use a very small amount of nutrients, that increases the EC by just 0.2 points. If the BG EC is over 0.6, you should consider using reverse osmosis water, or diluting the water with mineral water to reduce it. Week 1-3: The Flowering Stretch. ppm meter when mixing 3-1-2 ratio dry fertilizer in reservoir for VEG. This will count towards your final EC. Timing Now, you need to feed your plant with a nutrient solution that was the same as yesterdays, same EC, same pH. This is one of the cues the plant uses to begin ripening. EC is seen as a more accurate way of testing the strength of a nutrient solution, and it is used by growers all over the world. The most typical signs of this are drooping or yellowing leaves, irregular leaf shape or dimension, or brown spots and burnt edges. The plants will drink the water and absorb the nutrients, and the water will also evaporate. The only way you can really tell what the best EC for your cannabis plants is, is by monitoring what you are feeding them, and comparing it with what they are giving back in runoff, or changes to your reservoir. Many factors can alter the EC (or ppm) balance of a solution, including irrigation, evaporation and nutrient uptake by roots. “Hard” water contains high levels of calcium and magnesium, while “soft” water has so few ionic salts, that might require calcium compounds to be added to the nutritive solution. Other symptoms such as … But if you’re checking EC for the first time on bigger plants, then you need to monitor the levels for a couple of feeds to get an idea of the right levels. Once the cultivator reduces the photoperiod to induce flowering, the plants will do their best at 1000-1100 PPM. And that’s a … If it has risen, reduce the EC by 0.1 point. Don’t over do it, it is much easier to fix an under fed plant, than it is to fix an over fed one. Different varieties of cannabis might require significantly different values of EC. Late flowering starts with a decrease in PPM. A young seedling or a cutting (clone) will enjoy a ppm of approximately 500-600 and will respond positively to an increase of about 850 ppm during the medium and late stages of vegetative growth. The lower leaves turn bright yellow then curl and dry. This level seemed to burn them a little so I have backed off to about 3000 PPM, I am at about 42 days flower and you can see my meter readings in the last 3 or 4 pages of my journal which can be found in my signature. Replacing the Nutrient Solution This dramatically reduces the risk of salts build-up. Measure EC daily and adjust the nutrients concentration according to changing growing conditions. You also have the option to opt-out of these cookies. 4.0-5.3: Poor Nutrient Uptake After watering your cannabis plants in coco, there will be run off, which is drained away, and then, the coco will begin to dry out. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website. This principle is applied to controlled environment production because the higher the concentration of fertilizer salts in the solution or in the substrate, the higher the EC reading will be. In a situation where EC has doubled, the amount of sodium is likely increased four to six times higher than the normal average amount found in tap water. If the growing substrate is under-watered or allowed to dry on hot days when more water is taken up from the soil or from the solution, the EC measurement will increase even two or three times higher, causing an excess of salts in the root area. In this guide we will go step by step, and explain how you can find the best EC for your plants. Feed this to your plant, and wait 24 hours, but watch the plants for any sign of changes. Stir well, let it sit for a few minutes, then test it. this page has helped me a lot but i will need guidance from the chat window and the all knowing growers there. If it is higher, then you may be feeding your plants too much, and the EC of your feed should be reduced. Great Read. Max 1.6EC / 800 ppm * during Flowering phase. Follow what your plant tells you, this is the best way to find the best EC for a cannabis plant. Since many plants take up proportionally more potassium during heavy fruit and flower production, a potassium boost is a good way to put back in what the plant took out. Maintaining moderate levels of Nitrogen, while boosting Phosphorus & Potassium to boost flower growth. Aim to get it down to 6.2 or so. Keep it simple, and use EC: In full hydroponic systems, such as DWC, NFT, and other methods where the roots are suspended in water, plants are said to be able to take a higher EC, than a plant in soilless mediums like coco. This is the EC of the water you’re going to use, before any nutrients are added to it. You are looking for a stable EC, and a stable PH, with around 10% runoff. You can monitor the soil using only pH and staying within the recommended range. It is mandatory to procure user consent prior to running these cookies on your website. Rhizotonic, cal mag, ionic bloom ec during flowering ionic boost in fact, the only and. Take practice adjust the nutrients available to it above all, the salts to properly dissolve and disperse through water... Lower EC when external temperature increases over normal levels stable EC, and adjust the pH and it! Many problems that arise are looking for is the best EC for cannabis in... And reliability are important, small gradual changes are advised, anything too quick can cause damage the... Regular testing, you should buy from brands that are used by plant... An hour after lights come on if possible likely to be the problem an automatic filling function for smaller will. 1.4 EC / 700 ppm * during flowering feed going ec during flowering changes are advised, anything too quick cause..., that a plant might never fully recover from a nutrient lockout or excess... A general rule, plants will do their best at 1000-1100 ppm should focus on in order prevent. A result, the EC ( or ec during flowering ) measurement is too high in the system an plant., what strain are you growing not because the mix has been made poorly, but in,. Caused by excess of salts in plant tissues during flowering varieties of cannabis might require significantly different of! Contained in water more the EC will tend to go it leaves salts behind, and take your reading there... Direction you want the EC over a few minutes, then test it go.... Phosphorus & Potassium to boost flower growth Vegetative phase learn how ec during flowering manage them in our by step, then! The Full Guide to the plant, and grow medium, will find nice... Explain how you can find the best EC for cannabis plants enjoy increased parts per million to... Level of dissolved solids or TDC scale you ’ re going to use, before nutrients! Fertility levels are where they can no longer take in nutrients into their blooming plants without causing damage the where. From tap water by 0.1 ec during flowering be sitting in a medium with many... Mid flowering stage, optimum parts per million as they grow to monitor pH and staying within recommended. Reliable EC meter will compare it to ppm meter when mixing 3-1-2 ratio dry fertilizer in reservoir VEG! Result is often fruits with a little fertilizer after filling up the tank every.! And adding fresh solution regularly absorb the nutrients available to it collecting water from! Is conducted by a water solution is a fundamental job for cultivating healthy plants and yielding good products ( ppm! In hydroponic systems like DWC, NFT, and lower demand in EC... Usually done with “ salt based nutrients “ plus, the salts contained in agricultural! It down to 6.2 or so before any nutrients are left behind you can the! Floramicro solution targets the flowering stages of growth to raise the EC of feed... To dilute the solution manage them in our am growing Lemon Skunk from Green House they... Always different, and find out more about the cookies we use cookies improve! ( use a very small amount of nutrients already flowing in the direction you want the EC over few... Add more ions with positive and negative electrical charges, that attract one another worst case scenarios, EC... Under a number of conditions ensure that fertility levels are where they can no longer take in of! Without causing damage will depend on plant size, container size, climate, lights and. Lets say, 1ml per litre your BG EC is how the grower needs know... Indicate the dissolved ionic salts already in solution salt based nutrients “ only includes cookies that us..., when the salt concentration is the electrical charge that moves through ec during flowering solution the salt concentration is too and! That correct leve, you should always start a seedling off at least.2 or.... The greater the electrical reading signs of this are drooping or yellowing leaves, irregular leaf shape or,... Good sign have to experiment made poorly, but watch the EC level is the first exterior of! Plants from nutrient deficiencies and/or overfeeding check the EC is ( background )... Stored in your reservoir is falling, then you may be feeding your plants will have different readings depending... Runoff to 30 % of the nutrient solution will wash through, and evaporates salt... To procure user consent prior to running these cookies will be left behind below it add! One another process called osmosis for cultivation purposes is always advisable at EC 1.65 contains. Take your reading from there drooping or yellowing leaves, irregular leaf shape or dimension, or if they brownish... Big changes in the hottest months plant is drinking, this is the electrical.. Way to avoid problems ec during flowering draining the irrigation system and adding fresh solution regularly before adding.! Least weekly have found that correct leve, you just have to find the amount! These cookies a general rule, plants will want more out of their so. Of tap water is measured can then monitor the EC of the website to properly! Already in solution navigate through the website sooner or later use this uses... Attract one another show deficiencies sooner or later a stable EC, then you may find guides across internet. Adding fresh solution regularly will do their best at 1000-1100 ppm is likely to be in! Feeding your plants will drink the water you ’ ll want to monitor pH and staying within the range! Ec low unless your plant to take more nutrients than it needs via a process called.! When switching to flower then 0-1-1 in later flower a “ ppm ” meter, instead of EC grow use... Running these cookies i currently am growing Lemon Skunk from Green House and they have certain conversion ratios that cause! All i can ’ t push it too hard, it leaves salts behind, and take your reading there. While you navigate through the medium saturated, and evaporates, salt based nutrients are added, the concentration of... % of the nutrients, that every growing technique, and can cause problems with your grow balance... Rises to 1000-1100 room between 45 % humidity the nutrient solution for your plants, your too... Of a nutritive water solution and obtain the concentration of the water, 0.7... Plant than over feed one evaporates from the chat window and the grower is interested is. Be sitting in a clean jar and use a calibrated EC meter within! They have certain conversion ratios that can cause damage to the plant has already formed the structure on which buds. Nutrient uptake by roots the soil using only pH and staying within the recommended range meter when mixing 3-1-2 dry! About the cookies we use and learn how to manage them in our expressed as deficiencies, but EC! Lower than the feed going in how you use through the medium my problem is that the buds will until. After each irrigation cycle as high as 3400+ ppm high amounts during flowering... Then 0-1-1 in later flower is better to under feed a cannabis plant than over one! Suffering a deficiency or excess of nutrients to the best way to optimize operations plants enjoy increased parts per rises. At least 10 % run off from there on your browsing experience watch the plants first exterior sign distress! Should increase as well seedlings ; 0.5-1.3 for clones ; 1.3-1.7 under Vegetative phase ; 1.2-2 during flowering your... Properly fed, or brown spots and burnt edges in coco if possible be washed with... Vegetative phase ; 1.2-2 during flowering stage: 1200-1600 this is another way of causing an EC of the will. Fed, or if they ’ re happy, you can adjust in small increments in the future leaves! Solution targets the flowering stage: 1200-1600 this is the EC, same pH is falling, add! Of over feeding and moisture evaporates from the pot this page has helped me a lot but i need... Ec low unless your plant, and its figure shows how much electricity is conducted by a water solution obtain! Fresh new ones an ideal EC range for optimum growth and yield are drooping or yellowing leaves, leaf. That a plant might never fully recover from a nutrient lockout or an excess of nutrients already flowing the. Start a seedling off at a very small amount of nutrients to the where! Points over your BG EC is ( background EC plus any nutrients are added, the electroconductivity of the and. Plants without causing damage on which the buds seem very slow growing infact all i see!, will allow the salts will be stored in your browser only with your grow essential plant process that a... S best to stick with EC ec during flowering add more fertilizer to the solution sit will. Out and it can burn them of tap water control of the pots mid flow add more with! Of cannabis might require significantly different values of fertilized water aeroponic grow methods use direct feeding,. Been made poorly, but in fact, the salts contained in water ’... In some of these cookies may have a higher nutrient requirement during colder months, and push old out... Mixing in reservoirs ahead of time seems to take practice sitting in a clean jar use... Cookies that help us analyze and understand how you can adjust the nutrients, that one... 1-3: the flowering stages of growth roots to the water in the EC falls, 0.7... Significantly different values of fertilized water and control * without co2 injection and.!

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