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Grow QuestionsShould I flush my plants? I realized that I'v...

Should I flush my plants? I realized that I'v...

Livinit2019started grow question 5 years ago

Should I flush my plants? I realized that I've never done that and have been feeding them nutes for over 3 weeks now. They've definitely got some nite burn. How do I flush plants in soil without drowning the roots? And how shortly after flushing should I start adding nutes again

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Week 7

Leaves. Curl down

Philindicusanswered grow question 5 years ago

I'm not seeing any nute burn in your photos. But I would like to mention some of your upper leaves closest to your light show signs of heat/light stress since the leaf blades are starting to curl upwards. I would consider back off your light a bit and see if they lay back down. If your getting serious about growing you should really consider investing in a PPF/PAR meter which will help you measure the intensity of your light at different distances and part of your grow area. I use one every grow best tool I have no more guessing. As far as flushing goes some auto flower growers will do a flush around week 5 then switch to bloom nutrients just to help remove any excess nitrogen that is not needed as much during bloom. It's a matter of preference. I personally will flush to bring my runoff TDS below 900 ppm (Hanna 0.5 scale) or 1.8 e.c. Then let them dry out. Next time I feed in the 450 to 500 ppm range and measure my run off ppm. If it's high then they get plain water next time. I do this to ensure they are actually feeding off the nutes and they are not accumulating. Hope this helps. 👍

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souljasamanswered grow question 5 years ago

I would double-check your soil ph by getting runoff next time you water and testing it. If the ph it outside the normal range then its time for a big flush(2-3x the size of your pot) of properly phed water. Do this when its time to next water. Don't worry about overwatering by flushing, just let the soil dry out before watering again like you normally would. Overwatering doesn't happen so much from a single heavy watering(the soil can only hold so much water). Overwatering happens from watering too frequently.

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DankGardeneranswered grow question 5 years ago

Yes I would for the salt build up. When growing in soil i recommend nutrient feeding, water, water, then feeding again. Also after the flush I would give water then feeding water water feeding. U almost want the feedings a week apart with watering in-between. Good luck

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OutForRealanswered grow question 5 years ago

From what I can see no need to flush , I recommend you to just eater with plain water so tha plants will use the nutrients that remains in the soil , if you are already doing a feeding / water / repeat feeding schedule then maybe you should try a feeding / water/ water / feeding / water/ etc to be sure to not over feeding. From what I can see you have darl green leaves so maybe a N excess or it is just the phenotype type of green and maybe an early potassium or mag deficiency. Now to answer your question, to flush you need to gives the plants at least the pot size : air mean 10L of water to flush a 10L pot ( ar least , sometimes you flush a 10L pot with 30L of water ) and you let all the runoff get out before you can put the plant back in the tent and wait for the soil to be dry to start feeding again , you can feed straight after the flush ( when the 1st watering is needed) BUT as you don't want to bring too much nutrients you'll divide your nuts amount by 2and slowly increase it.

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