redmach1pilot;4811305; said:The one I used to see at the lfs was stuck to the glass quite a bit. I worry that my crushed coral substrate could get between the sucker and the acrylic as well. I'm interested to see how it goes in your tank.
On another note, the one that was in the lfs for over a year and a half never had a shark or larger fish in with it. The previous owner did not own a larger fish either.
never knew acrylic was so scratch prone
but I would say the odds are 1 in 100 that it would hurt the acrylic at all