Quote:
Originally Posted by Worth1
How much ospho per gallon of water.
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Just a couple of drops. It is not linear, so you really have to be careful. Let's say I use an ounce per 100 gallons and my pH moves from a 7 to 6.5, a few more drops may take it down to a 6. You can find it in most hydro stores labeled pH down, it is the orange Jim Jones koolaid looking stuff.