Let's say you have a solution with an EC of 1.0. This is the PH buffer. When considering the target EC for your nutrient solution (inflow), you need to understand that the EC will rise between fertigation events. There are minerals in the tap water you will use to water your plants and you will be adding some fertilizer solutions to the water which also can be measured in parts per million. PH is a concern though, unless you're running coco it sounds like you're a little low. I used to but apparently im supposed to use nutes constantly in coco, i do a flush once a week though with a salt clearing agent. By the end of 6 gal runoff is near ppm of what i put in (300ppm). If you’ve ever flushed a crop at the end with straight water, you would know why. However, natural PPM is 350 out of the tap. If you are starting with low EC water, the bulk of the EC will come from the base nutrients. Never let a plant go more than a few days without testing her run-off EC. Use gentle lighting at 24 or 18 hours per day, and if cloning use a humidity dome to allow your young marijuana clones to take in water from the air until their roots form: In particular, you should avoid nutrient lines that recommend high EC ranges and frequent flushing. Is it better to use an EC or a TDS meter? Managing the Electrical Conductivity (EC) of the water that is available to the plants is a key practice to maximize the speed of growth and yield of the harvest. But i get nute burn if i increase anymore so am i fine then? Be patient if minor burn shows as you increase EC. However if you get a PPM of 600 and a pH of 5.3 you are on the borderline of poisoning the plant. Regardless you should only add nutrients if your ppm level's get low, and only then if you are experienced and you ladies show signs of deficiencies that only fertilizer can solve. If you get a mix that has an 800 PPM and a pH of 6.0, that is fine. ... but now I have changed to coco tec as it's easier to order and works good just been adding the … I also did a flush today with the same results. I'm going to add more bloom nutes next run. When calculating your target inflow EC, you need to start with the low end of the recommended range. Discussion in 'First Time Marijuana Growers' started by ElChoppo, Jul 20, 2018. Slowly run 2x to 3x your container size of plain pH’d water to really flush it out. You should also be using a ppm meter to measure total dissolved solids while you’re measuring the pH. Clearly, cannabis plants enjoy increased parts per million as they grow. The best ph for flowering is between 6.0 to 6.2. But … Log in or sign up to leave a comment Log In Sign Up. Budsmoker187 Registered User. The Science and Practice of Growing Cannabis. It is a great way to share your experience and ask questions along the way. My combo meter uses a .700 conversion rate. i check my runoff #s (ph/ppm) every single time i water/feed. As described above, water is removed through transpiration and evaporation faster than salts are removed. I grow in 3 gal pots of coco. Santos L Halper Member. The ideal pH for coco coir cannabis grows is between 5.8 and 6.0 in the vegetation stage. I figure the soil is much more flexible but would still have an … Ppm going in is 750. I realize there are variables but looking for a basic explanation of how things “should be”. But you have another dimension to coco in that normal interval feedings of F/W/F/W can be changed to something like F/F/F/W. However, tap and well water may be used if they start less than EC 300. My tap water comes out at about 140 PPM and when I'm done adding nutes as per the GWE schedule it's usually around 400 PPM. Source: Just 4 Growers: Global Garden Community © Copyright 1999 - 2020 Grasscity.com is a part of, (You must log in or sign up to post here. Since water is about half the total volume of saturated coco, the amount of water required should be about 5% of the container volume. Tonight runoff came out around 1150. See our tutorial “How to Manage Cannabis Fertigation by Measuring Run-off EC/PPM”. Ohh seriously? I wouldn't worry about the ppm's but the pH is a problem. My tap water is PH 7.5 reading 199PPM. So I flush with 300ppm 6 gal of solution per plant, checking ppm run off at 2 gal, 4 gal, and 6 gal. When considering the target EC for your nutrient solution (inflow), you need to understand that the EC will rise between fertigation events. Water that starts with an EC of more than 300 should not be used. Remember that the run-off EC is the value that you need to control. Ph is within range. I had no idea, ill try doing twice a day when the lights come on and see how it affects ph and ppm. Was told to not even start Nutes until week 6, wanted to know what I want my feeding schedule and PPM. The founder of I Love Growing Marijuana, Robert Bergman, is a marijuana growing expert … To get an EC value, multiply the ppm reading by 2 and divide by 1000. Start increasing your PPM by 100-150 until you reach a spot that is best. If you’ve really fucked things up with the pH in your coco substrate you may need to take more decisive action. Both heat and low humidity also cause increased evaporation. My girls sprung back to life. 400 microsiemens = 0.4 millisiemens. What's your ratio of liquid cal-mag to mega crop? Running autoflowers, medium Happy Frog soil, fox farm nutrient trio and call mag. So from now on I feed my base nutrients at full strength (4mL per liter) and use my other nutes at 1/4 to 1/2 depending on how they look. You probably want a PPM around 600. What should your coco run off be? Coco specific nutrients do this very well.. they also need to be stronger, there should be no difference in Drain to Waste and Recirculating feed charts, coco consumes the nutrients the same way regardless of the setup. PPM stands for “parts per million” and is a unit of concentration. You want to "balance" your soil, that means what goes in should … If you are looking for advice and support throughout your grow, we encourage you to start a Grow Journal in our Grower's Forum. Make any changes slowly and always verify that your plants approve of the change. Your plants know better than anyone what EC they prefer. Copyright © 2020 Coco For Cannabis Inc All Rights Reserved, Growing Cannabis in Coco Coir with High Frequency Fertigation, Understanding EC, PPM & TDS for Growing Cannabis, How to Manage Cannabis Fertigation by Measuring Run-off EC/PPM, How to Water Cannabis Plants in Coco Coir. Never use plain water in coco until the flush. i like reading posts from SCMC as he definitly knows what he's talking about. Just as the nutrition needs of a plant change during its life cycle, its optimal EC range also changes: starting low, reaching a peak during late bloom, and going down sharply at the end. Could someone PLEASE help me understand. 2. I only put very min amounts of nutrients and always water in between.. they were definitely in lockout and I needed to remove the salts so I used florakleen and flushed through. Advice/Help. I hope this issue works itself out. Coco coir retains water well — too well, if you’re a cannabis grower who tends to overwater. Lightly wet the coco medium (too damp won’t encourage root growth). Once you determine your target inflow EC and are maintaining the EC in your coco within 300 points, make sure that your plants are happy! I’ve really fucked up my pH! On top of that, the physical appearance of coco coir isn’t necessarily a reliable gauge for knowing when the medium needs more water. However, you can only measure the EC of the inflow and the run-off. This means that when the coco has lost 10% of the water that it can hold you should water again. You need to be able to measure the EC of the run-off from each plant. hide. Since I started checking my run off and upping my nutes I noticed my run off ppm has been lower but my ph is still higher. Started grow in Coco only and using RO water and organic nutrients. Realize: Plants may be burned by abrupt changes, but they may be able to adjust to the new higher levels. In the chart below, you can find general guidelines for optimal EC at different life stages, however, there are differences between different nutrient lines. During the flower stage, optimum parts per million rises to 1000-1100. The Science and Practice of Growing Cannabis. If the starting water already has a high EC, you should adjust your target to account for the EC of the starting water. PPM (Parts per Million) levels is the measure of nutrients in the water used to feed your cannabis plants. The PPM hardness of your base water determines the PH of the medium runoff. My ph going in is also at 5.5. However- the ppm it displays could be 500, 640, or 700- depending on the tester used. If you use tap water, your reading should … The general ranges provided above are appropriate for General Hydroponics Flora Series. If the runoff is higher than 1,200, like 1,500 ppm, then the plant is not uptaking what you are putting in and is just wasted. I've been feeding them PH 5.8 tap water … I suggest you flush with 1/4 strength nutes instead of that clearing agent. This should be rare, and it might indicate some sort of salt buildup at the root zone. Do you put that kleanse stuff in the nutrient solution or do you just mix it with water by itself? 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