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11-26-2008, 12:27 PM #8OPSenior Member
PH Levels
what I am going through right now is I can't get it to stay at 5.8
Keeps rising to 6.3
I have a 5 gallon "resevoir" and add only a few drops of PH down.
If i add more than a few drops it sinks to 3.2 and if I add baking soda it goes back up to 6.4 etc.
I am constantly adjusting, but I am adjusting in the resevoir rather than making new water each time.
Is this OK?
Is there a set amount that will drop my ph 1 point in 1 gallon.
i.e. 2mL of 85% phosphuric acid will lower PH by 1 point?
I have figured out that 15mL or one tbsp will raise PH 3 points in 12 Litres or 3 gallons.
I am new to this hydro thing and quite confused.
having said that, the roots are longer than two days ago and the tops are showing new growth.
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