Cloudy water after WC/fish gasping
hi, i tried looking through old threads about this problem but i couldn't find what i needed. i do weekly 50% water changes in my 55 gallon tank. The past few times the tank is all cloudy the next morning and the fish are gasping at the surface. Last night i replaced the filter floss in my fluval and got some of the extra gunk out after the water change.
The parameters are:
Ammonia 0 ppm
nitrates 0.5 ppm
nitrites 0 ppm
temp 75 degrees
i dose ferts about 3 x per week/capful of flourish
96 watts/8 hours day
pressurized CO2 - 18 ppm
fluval 305 canister filter with ceramic rings & filter floss
i have 5 red zebra cichlids, 1 SAE, 2 australian rainbows, 2 black mollies in the tank
why does my water turn cloudy the day after a water change and why are my fish gasping at the surface? my best guess is there's not enough O2 in the water but i'm not sure why that would be. a bacterial bloom doesn't seem to make sense here. it's not green water either i checked. thanks for any suggestions.
Last edited by coley24; 03-06-2008 at 08:08 PM.