When everything is set, you can test the water by putting the tip of the meter in it. A tiny error can MASSIVELY impact your plants’ growth. This way, you can be sure that the reading is accurate. After calibrating your TDS meter, turn it on. To do this, you will need to use a calibration solution. Too many nutrients can cause a nutrient burn. If you plan to make nutrient water, make sure you test it before watering your plants.Īs much as you want your plants to grow healthy, you MUST be precise with the amount of nutrients you give them. Step 1: Prepare the Water You Want to Testĭecide which water you intend to use for your marijuana plants. This will accurately measure PPM so you can keep your plants healthy. If you want to measure PPM in the water you use for growing marijuana plants, you will need a TDS meter. We need to emphasize the importance of checking the pH and PPM regularly for this reason. In cannabis cultivation, they call this NUTRIENT LOCKOUT.Ī little discrepancy between pH levels is normal if they’re in the correct range. Changes in pH can prevent the roots from absorbing nutrients. The significant pH changes are known as pH drift. In this case, you need to pay more attention to your pH levels and signs of possible nutrient deficiencies. This will make the PPM reading UNRELIABLE. With this, your soil’s PPM readings won’t consider the total nutrients that have yet to break down. Organic soil contains complex molecules that can turn into simple salts. The PPM reading for testing organic soil can be difficult to decipher compared to using synthetic fertilizers. It could be the pH level.Įnsure that you check the pH and PPM regularly. If the nutrition levels are significantly decreasing between your reservoir and runoff, yellow leaves are not caused by nutrient deficiency. This could be due to nutrient deficiency. If your cannabis plant has yellow leaves, check the PPM results for your reservoir water and runoff. But before that happens, make sure you mix them well. How do you fix it? Flushing with water can help remove the calcium salt buildup. It gets stuck and dissolves into the runoff.Īs a result, ppm levels in the runoff increase. This happens when there’s a buildup of salt in the plant’s root zone. Water PPM runoff higher results are uncommon but can still happen. To fix it, mix the nutrients properly as you add them and wash your mixing cup between nutrients. It’s easy to fix.Ī white precipitate buildup in the reservoir water might be the reason for this. If you’ve significantly increased the nutrient levels and the PPM runoff results are alarmingly lower than usual, that can be a nutrient LOCKOUT! But don’t panic. Make sure you add nutrients ONLY when needed to avoid nutrient burn. You can gradually add more nutrients if the PPM meter shows extremely low runoff levels. If your ppm drops from 1500 to 800 daily for a week, your plants consistently absorb nutrients at the same level. When you check the PPM regularly, observe any significant decrease in the runoff results. The ideal result is a low PPM runoff reading compared to the nutrient’s PPM. Inconsistency of pH levels may hinder plants’ nutrient intake. To solve this, check the pH level of the soil. That would mean your plants are not taking enough nutrients as they should! No difference in PPM results means less nutrient level intake. You should be CONCERNED if the TDS meter shows no difference in PPM results between your nutrients and your runoff. What do you do with the different PPM results? You either increase or decrease the nutrient levels depending on each situation. You can do this by simply adding nutrients suited to your plants’ needs. Once you have the PPM results, you can make proper adjustments to get it in the desirable range. Everyone in the cannabis industry knows how important this is! The Different PPM Results
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