I've seen oscars eat MTS in my tanks. They do everything short of crush them flat in their mouths then spit out the shell bits. Oscars will attempt to eat anything that will fit in their mouths.
That was my point? I meant the waste wouldn't get under the sand unless you literally yourself attempted to bury it, and somehow succeeded...Lupin;3200631; said:Sand is heavier than fish poop. That is unlikely to happen.