I don't think the bio-balls make much diff. If the plants can't grab the amonnia/ammonium before the bacteria get it and convert it to nitrite then nitrate, then they will get it when it's converted to nitrate. And how much ammonia/ammonium the plants use up will limit the amount of bacteria the tank will support. In fact, if you think about it, that's an argument for having them, to lessen the possibility of excess nitrites. But either way, it problably won't lessen the amount of nitrogen available to the plants. sh --- Nickeydundee@aol.com wrote: > 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 > ===== Christel Kasselmann, author of the best current authoritative text on aquatic plants will be a featured speaker at The Northeast Council of Aquarium Societies 30th Annual Convention. March 18-20, 2005 at the Marriott Hotel, Farmington, CT _______________________________________________ AGA-Member mailing list AGA-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/aga-member