parameters

I've been testing my tanks' water parameters once/week. The levels for ALL of my tanks are as follows: Nitrite - 0 Ammonia - 2.0-8.0 Nitrate - 15-120 Every tank is either adequately stocked or under-stocked. Tanks are being fed twice every day, small amounts the fish eat in less than 15-30...

Please don't kill me for asking this, but either I'm not using the "Search" on this website correctly, or some major improvements need to be made because I typed "recommended water parameters" in the search, and NONE of the hits I got directly related to "recommended water parameters". Maybe...