water test results

[swimmer]

Is there a thread that gives parameters for water results? What is acceptable ect.
I am getting different answers about allowable levels and proper corrective measures.
125 gal tank
Tetratech 500
15 fish, 3 guppies, the rest various tetras
Tank is a little over two months old.

Thanks,
Jonathan

[William]

That is due the fact that what is a allowable level depend on what fish you keep. However your goal should always be to keep ammonia, nitrate and nitrite levels as close to zero as possible.