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Anyone tried or has experience using Food Grade Phosphoric Acid as a PH Down?
DabblingDoggostarted grow question a year ago
I bought a bottle of certified Food Grade Phosphoric Acid (85%)? The PH Down from GH, and they use food grade phosphoric acid in their product (generalhydroponics.com/products/ph-down-liquid/). Has anyone tried this? Any tips? I have distilled water to reduce concentration.
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m0useanswered grow question a year ago
Its 100% good. You did not need food grade but that's a nice touch.
I also use a 85% ph down that is comprised of only phosphoric acid. I have the main bottle in the closet stored upright and I fill up a little tincture dropper bttl for my main tent and add in drops at a time. about 5 drops per gallon of water to get it low 6.0 and about 2-3 drops to get it aorund 6.5 for my tap water every place is going to be different based on mineral content of the water.
You don't need to dilute it further with distilled as it just means you need to use more, but that could offer a bit better control if your working with small volumes of water, so the option is there but I think its not needed.
Good Luck!
Sciolistic_Steveanswered grow question a year ago
there are plenty of options that don't add overlapping plant needs. white distilled vinegar is usualyl found in any household.. that's cheap and easy to use.
ph-drift is not caused by the acid you choose. the acid you choose is not more stable than other acids.
ph-drift occurs when a solution is not properly buffered. it is a sign of a shitty manufactuer of soilles/hydro nutes (not soil nutes, those are rarely ph-buffered)
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Sciolistic_Steveanswered grow question a year ago
yes, as long as it doesn't create an imbalance related to adding more P ...
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Robertsanswered grow question a year ago
It should work fine. I use a phosphorus ph down. I generally add it with a eye dropper.
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