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Included with the stuff got off of craig's list was a aquarium pharmaceuticals master test kit. The instruction manual was gone. It had instructions on the color cards for PH, Ammonia, nitrites. The test for GH however has not a card.
Does someone know how this test is performed? I'm thinking add water to tube, drip in solution until a color change occurs, keep track of drops.
There was probably a chart that said x # of drops = GH, of course this is just a guess.
Any help appreciated. My initial tests this morning were ph 7.8 ammonia, nitrites, chlorine all zero. I'm off to find some surfactant free ammonia.

Does someone know how this test is performed? I'm thinking add water to tube, drip in solution until a color change occurs, keep track of drops.
There was probably a chart that said x # of drops = GH, of course this is just a guess.
Any help appreciated. My initial tests this morning were ph 7.8 ammonia, nitrites, chlorine all zero. I'm off to find some surfactant free ammonia.