Hi , I'm just going to throw this out there,,,, at the moment I have no wood in my tank for my BN Plec to rasp on, I have it soaking to remove tannins.. As the tank has ocean rock in it the Plec seems to be eat algae rom the rock, BONKERS question is do you think the plec is capable of chiseling away at the rougher pices of rock, reason I'm asking is I am finding lots of "crumbs" rubble in the tank