Okay I have a 45 tall with 1 8 inch plec, 1 dwarf ruby gourami, 2 mollies, 3 cherry rasboraS, and 3 oddball minnows, oh and 1 black skirt tetra. My test kit says I have between 0 and 20 nitrate no nitrite 7.2 ph and 80 alkalinity and like 400 hardness. Is that good? Everybody seems happy. Oh and...