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flush of substrate?
SprayPtstarted grow question 3 years ago
I believe I'm using nitric acid as ph down didn't know but is a very corrosive acid, which alternative is best during the flush I think it could cause a bit or harsh smoke...? As I'm a bit concerned about I thought of no use of ph down during flush, use a bit of h2o2 advice plz??
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m0useanswered grow question 3 years ago
Never been a big fan of flushing but some people like it. just water should work fine.
Don't like vinegar as a ph down as it kills off microbes as well but if you not in soil not a huge issue.
Big fan of phosphoric acid though. some other acids can be used if diluted correctly but if they are stable is the question.
Good Luck!
Benzelsanswered grow question 3 years ago
Ive been told vinegar works too- but yeah just flush with plain tap water til harvest and you be fine. Now I think about it, i never PH'd my final flushes either...and our tap water here is shit. High Ph and full of minerals. Like rock hard hard water. Dont worry, it be fine.
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Organomananswered grow question 3 years ago
Just use plain tap water, one week of tap water will not effect anything, but it will flush your plants properly and safely.
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Greencryptoanswered grow question 3 years ago
You can always use a lime couple drops natural ph down 👌 literally just cut add drop by drop until right ph or you can buy a auto ph nutrients which I find is very good 😁😎 best of luck buddy 👍
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Robertsanswered grow question 3 years ago
When using strong nutrition it will make it harsh and nasty. Phosphorus ph down is best in my opinion and what I use. Also provide a darkness prior to cut so sugars are in roots. Then slow dry. Leeching the chlorophyll this way will help with harshness.
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