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Flushing Autos

Rangaku
Rangakustarted grow question 2 years ago
I’ve heard arguments for flushing from every 4th feed to once every 4 weeks or some growers don’t flush at all until the end right before harvest . I should note this relates to coco grow medium .
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Feeding. Other
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gottagrowsometime
gottagrowsometimeanswered grow question 2 years ago
Hey. Me personally I have to flush. Cause I use so many different nutes. When using coco it's best if you are using the same line to make a mix. And that way you can tweak the PPM and even PH as all nutes have different PH. Just don't go overboard on one nute to get to that perfect PH. Ideal PH, or will be best in between here that way you w9nt have to many swings in nute uptake VS Nute lock. 5.8-6.3. Once a week for a whole day I just flush with 6.3 ppm78 distilled water, tap will also be fine, but hey if you have a drinking water filter use it, if you don't tap is fine. 4-700ppm wk1-2 5-900ppm week 3-4+ And if you want and depending on strain your plant might take extra but get there in small doses like increase by 50-100ppm. Don't forget cal if you want to increase harvest also micro, root stims and silca&sugars during flowering will also help increase harvest but again thats fully down to growers choice. it's always better to have a slight def than a Tox. It's much easier to fix and you can spot the signs earlier as N tox can creep up on you and before you know it you'll be looking at a shiny very very green plant that otherwise looked healthy, I learned that the hard way by understating and when I was I was giv8nh too high a dose and didn't do any flush for the first few wks. So yeah flush with coco is key, Happy growing, best of luck.
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Roberts
Robertsanswered grow question 2 years ago
Cal mag is needed for sure in coco grows. Heads up.
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Roberts
Robertsanswered grow question 2 years ago
I grow in coco. Had amazing results. Feel free to look at my recent autos. Here is my schedule. I use 3 gallon fabric potters. I feed every other morning. When I feed I dump 2 liters of just ph water in to get everything soaked and a ph run off reading. If reading is in line with where I want it I apply 2 l light base nutrition, then 2 liter with current dose of nutrition and all is ph'd. So 6 liters every other morning. If after first 2l and if ph is too high or low I flush till run off is right then do light feed, and regular feed mixes. Depending on size of potters I might have a hard flysh anout 2 to 4 times a grow if nutrition is close to in line. Nutrition amounts play a huge role in ph drifts. Then after feeding I splash with ph water in evening to keep moist. Then again the next morning and evening to keep moist. Then that 3 rd morning I start over. This amount of water in coco helps keep levels in check, and provide excellent growth on coco. Never leave coco without nutrition in it. Just large doses of water to keep ph in line by testing run off. Don't let it sit in run off. You can not overwater in coco unless it is a never ending non stop flow. At last 2 week I stop feed dump about 3 gallons through to wash a lot of nutrition out then every other morning I give 1 gallon of ph water anout a 6. Maintaining keeping moist. Has been My watering schedule for autos in coco. Had several half pounder plus grows. So it is my secret schedule I basically gave you. Once nutrition is right your ph stabilizes in coco from Day to day. Ph drifts up more nutrition, ph drifts down too much nutrition.
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Organoman
Organomananswered grow question 2 years ago
Flushing is only needed in extreme cases of eff ups, such as feeding waaaaay too much or if there are problems with toxicity. It is not needed as a general "just because", it will just kill most of the beneficial microbes in your substrate, leading to plant stress. "Flushing" at harvest time is not an exercise in drowning the bejeezus out of your plants, but an exercise in nutrient with holding so that the plants get rid of any residual fertilizer salts from their vascular system. All that is required is to give plain water, nothing else, in normal quantities, at normal intervals for the last 7-14 days before the big chop chop. Flushing should rightly be renamed "nutrient witholding period" to prevent ongoing confusion regarding this operation. Since you are growing in coco coir, either "run to waste" or ensure there is run off each irrigation and this will prevent nutrient salts from building up to toxic levels in your substrate, negating the reason for ever needing to flush. Hope this hellps, Organoman.
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