I'm interested in some of the smaller Loricariidae like Ancistrus, Hypancistrus, and Otocinclus. I believe I've read that some of the larger plecs can actually scratch acrylic with their rasping teeth. Although I wouldn't want any of these larger species in a planted tank, I wonder if anyone's had experience keeping the aforementioned genera in acrylic tanks and knows if they can damage acrylic surfaces. Thanks, Tim