pwmin;4396617; said:assuming you're referring to plecos, don't risk it! they will likely suck the slimecoat off the rays
flagtails do a much better job cleaning the glass and don't suck slimecoat as readily, but it's still not a very good idea.
sebarau;4397018; said:flagtail do suck on the slimecoat and to the extent remove some skin as well from the rays. but i'm only notice they will only do this when there is no longer food for them i.e algae. so far i've experience 3 times with some scar on a few marbles. so what i practice now, once the algaes gone, it's time to move the flagtail to another tank ..![]()