I have a 72g bow front tropical freshwater aquarium. It's currently stocked with 7 cherry barbs, 7 black neon tetras, 4 kuhli loaches (pangio oblonga), 6 platy (mixed species), and a bristlenose pleco (though I haven't seen him in a while, I think he's still in there).
There are a few plants in there (an anubias, some red ludwigia, and hornwort).
Green algae has been an issue to control in the tank. I've tried differing the lighting. I manually scrape off the algae from the glass and the decor in the tank, yet it always seems to come back with a vengeance. In conjunction with my current cleaning methods, I was thinking of adding some species that like to eat algae. Perhaps a couple of ghost shrimp, an apple snail, or maybe another bristlenose pleco. I would still provide some food for these additions, but the main goal is for them to eat a good portion of the algae. I was also thinking of adding a marino moss ball since some people say that they help control algae populations.
My worry is these species compatibility with my current occupants. My cherry barbs tend toward aggression (I feed them often, so I don't know why they are aggressive to the other fish). I once tried to add guppies to this mix and the cherries and black neons picked on them horribly. I don't want to invest on new fish just to have them be incompatible with the current tank.
Any advice would be appreciated! Thanks!