Alright, so I've narrowed it down to TSAE or Bristlenose Plecos. Nerite Snails seem too sensitive to my conditions and ottos will get eaten by a variety of fish in my tank (African Knife, Black Ghost Knife, Ropefish, Leopard Ctenopoma, yeah you get the point). My main purpose to get some of these guys is to remove algae off of plant leaves. I have some problems with this and some of my plants just break their leaves off when I rub them

. Also, cleaning the tank is hard because of the sheer size and the algae always refuses to leave my plant's leaves. The tank is 40 in. by 12 in. by 18 in.