I keep a freshwater, community tank (46 gallons) with usually platties, barbs, penguins, hatchets, those types of fish. My water comes from our well and the quality is perfect, no ammonia
, no nitrates, no nitrites. I've used some nitrate removers and my water quality in my tank is perfect. No ammonia, no nitrites, my nitrates are at about 10, but it is in the safe leve. My pH is inbetween 7.2 and 7.6. My temperature stays between 78 - 82.