I have9 months with my 55g tank, filtration: wet/dry millennium 3000,305 fluval canister,100 seaclone skimmer,30 pounds live rock.
inhabitants:lion fish,humu-humu,porc spine,brittle star,1 condy anemone,1 long tentacle anemone, 1 feather duster,1 pencil urchin,several snails and 3 or 4 hermit...