Masterderrull
Member
It's a piece of filtration hardware that comes after the display and before the sump; called a "aiptasia scrubber", "algal scrubber", "sediment chamber", and "raceway culture". It looks pretty simple to build from the illustration that I have, but I've never heard of it or seen one in action. Are they practical? Do they work? If it's called an aiptasia scrubber, how do you keep the atip from multipling all over your display tank?