I have a 4 rams, 5 cardinals, an oto, and an albino BN female in my 29g planted right now. I know I leave my lights on too long, but it's nice to be able to see the fish, so I prefer to have something just eat the excess algae. My problem is, my 2.5-3" albino BN can't keep the tank clean on its own. (clear of algae on glass, I do at least one 10g water change per week, nitrates never above 20ppm). Would I be able to get away with a second albino BN?