Depends on the pleco. From what I've been told BN's will not damage the acrylic. Royal and commons are known to destroy acrylic.
Stay away from the panaque plecos, I had a watermelon pleco completly ruin my 90 gallon. Albino bn are your best choice imo.
NothingJust curious but what does skin pigment have to with how a pleco behaves? Not trying to come across rude, please don't think that. I've just never kept an albino but have kept thousands of common Ancistrus so I don't know.