I have had a lot of detritus in the refugium. Siphoning it out seems to remove a lot of live coral food, copepods, etc, plus if the plants are disturbed it creates a lot of detritus in the water column. Some of the Europeans are putting a power head in the refugium to keep the detritus in suspension. I'm trying out a new method to remove the excess detritus, by adding 14 star serpents to the refugium. When I was snorkeling in the reefs, I found out by flipping over large rocks I would see many star serpents and brittle stars. So lets see how this works out?