I have a Red Sea GH test kit it says to addd one then it should read a start color, It does not read that that color till I get to like for drops. Should I start counting the GH on the first drop like it says, or when it matches the start color. My GH would either be 8 or it would be like 12. I have done some looking, I think this test may be for marine does that matter if it in fact is?
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