I was wondering if there are other plecos that are more active? There is considerable algae build up despite the pleco, 3 amano shrimp and 4 nerite snails in a 29 gallon. Plus the pleco hides all day and does not detach from his log for tank cleanings. I cannot ascertain his condition and would rather send him back to the LFS than have him die (if he is actually in a bad condition). I also just got a school of cordys and they eat the wafers meant for the pleco so he may starve at this rate anyway. Thanks for the advice in advance.