I've got an Eheim reactor. Does anyone feed the little bubbles into something else to dissolve them more? Canister filter maybe? "I wear black on the outside because black is how I feel on the inside" -- Morrissey Kelly Beard, Cat IV, Team Allanti President, Allanti Cycling Club - http://www.allanti.com Race in Tennessee - http://www.tbra.org/98-road.shtml