Hi
I have a 20 gallon tank with 7 cories about 10 guppies and a pleco. The chems are ammonia: 0, nitrites:0, nitrates: 160 and ph: 6 No matter what I do re: water changes, etc these seem to be the levels I get for a very long time. Recently the corys have started coming to the surface to get air - it seems to be all of the them but none of the other fish. They seem healthy otherwise. I have a Tetra filter that attaches to the side and the water temp is always within the "green zone" of the thermometer. Should I be concerned. Should I be trying to increase the aeration of the tank and if so how?
Thanks,
riri1263
I have a 20 gallon tank with 7 cories about 10 guppies and a pleco. The chems are ammonia: 0, nitrites:0, nitrates: 160 and ph: 6 No matter what I do re: water changes, etc these seem to be the levels I get for a very long time. Recently the corys have started coming to the surface to get air - it seems to be all of the them but none of the other fish. They seem healthy otherwise. I have a Tetra filter that attaches to the side and the water temp is always within the "green zone" of the thermometer. Should I be concerned. Should I be trying to increase the aeration of the tank and if so how?
Thanks,
riri1263