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Quote: This PH up/down solution is 0-0-9, and at 1/2 tsp/gal per point...
That's what i've never seen before, not the mixing of Ph Up/Down with nutes, but the fact the Ph balancer has an NPK ratio??
Another thing that's weird to me is 1/2 tsp gal per point of Ph? I use the GH Ph down and it doesn't even give you an estimate on how much to use. I generally use a 1/4 tsp per gallon and that's enough to drop my 7 ish water right down to around 6.