Api Ph Color Chart. Api ph freshwater aquarium test set, 250 matter test weekly to preserve a healthy balance. These kits will give you an accurate ph level reading that spans the whole spectrum.

Please note there is no shade graph for this test kit given. According to the api ph test kit instruction manual, “a ph of 7.0 is ideal when keeping a community aquarium containing a variety of tropical fish. These kits will give you an accurate ph level reading that spans the whole spectrum.