I have a 55 gallon show tank with live plants and cichlid rock caves in it. My tank has 5 freshwater neon blue gobys, 4 assorted cory cats, some barbs, some tetras, and 1 rainbow. I want to add a pleco to the mix for algae control. All my fish are peaceful, no aggressive ones at all. I have about 25 fish total in tank. I use RO WATER in tank. I was thinking of the THOMASI PLECO. From what i've read it seems like the best choice. Any suggestions. I want to add the right one the first time so I don't have problems. Thanks for any help you can give me.