Hello All, My tank Rachel has been running for 8-9 months now. NH3 and nitrite are zero KH is 4-5 degrees and PH is set at 6.8 with the american marine ph controller that is running the CO2. With the bio-balls in the sump I think I can get rid of them because the plants will use up the NH3 which they like anyway right? Why make the plants work harder for NH3 then they have to plants grow bio-balls don't. Or maybe I am wrong about the bio-balls....and should leave them.. _______________________________________________ AGA-Member mailing list AGA-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/aga-member