I have a 3-4 month old 40 gallon breeder FW tank set up. I have a community tank, NO PLANTS, with about 8 fish In it, 2 mollies, 2 dwarf gourami , and 4 red tetras
My Filtration is. Fuval 406 with sponges as the first media,Fluval Biomax Bio Rings in the 2nd basket, activated carbon, then...