Velvet wrote:
Doesn't seem food triggered in my tank (little gravel I can get to to
vacuum, too many plants LOL) since the gravel's full of whatever it is
they seem to munch (try not to think about that too hard given the gunk
that's in there).

Fry food will trigger the MTS to go up my glass, all concentrating where
the filter flow would make any food particles in the water hit the glass.
They don't seem to do it with normal flake food though.