Hey guys, I don't know what's going on with my fishies... All of a sudden, today, two of my guppies (from the same tank at the LFS, bought them a couple weeks ago), are staying near the top of my tank. It doesn't LOOK like they're gasping for air, but since I started CO2 I guessed that's what it was. I'm only using a CO2 bell, and when I first noticed it I checked my pH and kH to use one of those charts to predict my CO2 concentration, and it was like 8ppm. Not enough to hurt fish in the least? Also, I didn't think you could get high enough concentrations with a CO2 bell. I made mine out of the top of a bottled water container. I immediately turned off the CO2 regardless, and when that didn't help, I added an airstone. I also did a small 15% PWC. Any ideas what it could be??? The rest of the fish are fine, swimmin around as usual. I haven't checked the other params yet, but I'm gunna go do that now, but I haven't changed all of my filter media recently. About two weeks ago I took out some REALLY old carbon, and replaced it with sponge, then a week ago I took out my old sponge and replaced it with MORE sponge, but I still have the ceramic inserts, and I don't THINK I would have gotten rid of too many of my beneficial bacteria. Going to check now...
Other levels are perfect, 0 Ammonia, 0 Nitrite, 0 Nitrate (ok well nitrate is LOW but that's not going to hurt the fish, it'll give me algae, but won't hurt anything.) I'm not happy with sick fish. Oh, pH 8, kH 10 degrees, didn't test gH but I'm guessing it's 12 degrees, cause that's what it was a week ago when I changed the water, and hardness doesn't just "disappear."
Other levels are perfect, 0 Ammonia, 0 Nitrite, 0 Nitrate (ok well nitrate is LOW but that's not going to hurt the fish, it'll give me algae, but won't hurt anything.) I'm not happy with sick fish. Oh, pH 8, kH 10 degrees, didn't test gH but I'm guessing it's 12 degrees, cause that's what it was a week ago when I changed the water, and hardness doesn't just "disappear."