I'm setting up an AIO 49 gallon from IM. (While I await my 170.). I would like to set up a refugium for it for chaeto and copepods because I'm the future I think I'd like to keep a mandarin goby there. (Biota mandarin only so they will eat prepared foods as well.) Are there any good options for an "external" refugium? Has anyone set one up before?
On my IM15 I tried a couple things.
First was a small 3D printed one that hung off one of the baffles above the return chamber in line with the AIO flow. The issue with it was as the filter to keep the chaeto from getting into the return clogged, it messed with the flow into the return chamber, which triggered the ATO. It was more trouble than it was worth imo.
Second I used a hang on back media reactor with a dedicated pump, crushed rubble, and chaeto. This setup worked fine, but ultimately I decided it wasn’t enough for effective nutrient export.