I would be afraid to depend upon water power to turn one of those rotating gizmos. Just about anything would stop one from rotating and once it does it will dry out and never turn. Besides I would be wasting valuable oxygenation power to turn a wheel. What about using an old bar-b-q spit motor to turn one?
I got my three additional filters ready to go. I am just waiting on deer mesh. I think I'm going to redesign the base and make the water come in under the bottom crates instead of on top of them. Then I wont even need the white top baskets. It will mean taking them apart but I think it will be worth it before I put in the deer netting.
I beg to differ about "wasting" oxygenation power. Using that flow to turn an RBC would INCREASE all gas transfers.
I also wonder what makes you think an RBC is easy to stop. Rock solid reliability and capacity is what makes them the single most common filter used in "old school" (read; reliable)densly stocked aquacultuce systems.
