Venom SS;2156859; said:These are struggling allready. They did fine yesterday, fed and all, and today they seem very aggitated. Swimming in place, hanging out at the top and pacing the tank. They arent gasping or anything. Just seem very uncomfortable. Did a 25% water change, water tests good. Ph about 6.5, Nitrites zero, Nitrates about 20ppm which is a tad high but not critically high, temp 86 degrees. Tankmate (small oscar and a couple feeders) doing just fine. I dont get it.