Like Scott (Esshup) says I've done both -- a floating RBC and one where the axles go through the sides of a large tank with the ends capped. I'll take the floating hands down. Not only will it adjust with the water level there is no weight pushing down on the axle to speak of, and PVC inside PVC that is lubricated with water lasts indefinitely.
One of the downsides to typical nonfloating RBC's is the weight the axle has to endure. As bacteria builds up on the surfaces of the RBC it really adds up. It's a tremendous amount of weight and historically a lot of RBC axles have snapped if they didn't float. Not that it can't be done though.
Last edited by Cecil Baird1; 06/02/12 09:04 AM.
