hi fish forums. I'm planning to add some bn plecos to my 55 gallon. My tank has some cichlids like firemouth, convict, blue acara and 4 tiger barbs(adding more). My question is how many bn plecos could i add in the tank. My tank has algae everywhere on the background of my tank. If i add 4 more tiger barbs, how many bn plecos could i add? thank you if you responded.