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flush of substrate?
SprayPtstarted grow question 3y 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 3y 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 3y 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 3y 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 3y 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 3y 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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