yeah tough to know if you got it all if sucks into crevices everywhere only thing to do is replace with new tankk sump pumps powerheads?
rock and sand and coral andmaybe fish
I have alot of coral so I would have to take all rock out and let it die and replace the substrate and clean all of the tank ... would be like stating over .... ask others about it maybe they will have better answers then mine ....
no that is the solution i came up with as well
buy new tank and new rock and new substrate not bring anything over from this tank except maybe the fish