I do not run what most people would call a real refugium but I do have a 5' trough at the back of my tank that was added to grow algae. After a few years it filled with corals and stopped growing algae so I just use it for amphipods which it is full of. I also use an algae scrubber.
Once or twice a year I stir up the entire tank making a typhoon with a diatom filter to suck out extra detritus.
Here is whats in the trough

It's above the water to the rear. It also blocks the light from hitting the rear glass and I like the look of that.

Once or twice a year I stir up the entire tank making a typhoon with a diatom filter to suck out extra detritus.
Here is whats in the trough

It's above the water to the rear. It also blocks the light from hitting the rear glass and I like the look of that.







