I've done some searching on this forum but nothing seems to match my situation.
Last weekend I did a large water change (about 40%). I did everything I usually do: use the python to siphon the water out the garage door... refill w/ tap water conditioned in the tank w/ Bio Safe (the stuff stinks like deadly chemicals, is it going bad?)... and then clean out filter the next day. Problem: This time, the next morning the tank was super cloudy... like driving through a dense fog...could barely see back of tank! So I cleaned the filter hoping this would help... nope.
Ive had the tank up for over 7 months. I did not disturb the gravel/flourite/ecocomplete mix. I dont think it is suspended air bubbles from the tap - Ive done several changes prior and the tank always looks crystal clear afterwords.
One of the only things I did differently was add a couple of teaspoons of Stress Coat (just needed to empty the bottle for another project).
Here's the setup: just under 3 wpg w/ 55w pc's. pressurized co2, Cascade filter. Left half of tank is heavily planted: Baby's tears, java fern, Water sprite, rotala magenta, micro sword, sag sp., Vals, large amazon swords, sunset hygro. Right side is glosso w/ riccia w/ large rocks - going for the Amano rock garden look. Ive got 10 Cardinal tetras, 13 otos, 3 Large angels, 9 amano shrimp.
Temp is 71 F, ph 7.2, kH 4-5,
**Also - Thursday did a 25% water change hoping this would help... nope! Still cloudy??
Sorry for long post
And Thanks for the help!