my 120 gallon is about 6 months old.
I have a 2 inch fine sandbed,120 lbs live rock,a sump with skimmer and mesh bag to catch detrius. a seio 820 and aquaclear 275 ghp,blennie,dogface puffer,yellow wrasse,2 clowns , 2 chromis,emerald crab and 3 crabs.
when the puffer blows in sand or blennie or...