I seem to be accumulating a lot of detritus in certain areas of my 30g reef tank. Right now I have 8 Astraea snails, 5 or 6 dwarf hermits, 3 or 4 Nassarius snails, a 4" serpent star, a cleaner shrimp, a royal gramma and a 6line wrasse. Should I add more detritus-eating critters (nassarius? or something else?) or vacuum it out when I do a water change like I'd do with a freshwater tank? It appears to be mostly fish and snail poo, and some bits from the LR
, no excess food or anything like that.