tank is 81, has been set up for 6 months, and plecos never went for air b4. i lowered the water for more agitation from filters... they seemed to act normal again.... filled the tank and a day later same prob.... must be an o2 prob.... and im getting an 80 gal very soon... more reccomerndations...
Ive had tank for a while now without any problems but last night a did a water change, didnt do anything different then i normally do and tonight most of my fish are breathing rapidly and my plecos are releasing air bubbles then rushing to the top of the tank and back down. Whats wrong and how...