I have an established 125g tank with 3 eperor 450 filters on back. I never had a problem with ammonia before this. I went on vacation last week and before i went i took out to much bb by changing some filters and over gravel vaccing on accident. So i came home and my fish were staying on the bottom not eating so i figured ammonia. I tested it and the water was really bad 8ppm ammonia so i did a 75g wc. Today still high so i did another 75g change. Is there anything else i can do to get rid of it quicker?
