I have some kinda black algae and green algae in my planted tank. Its in my 29 planted tank. I have ottos to get rid of regular algae but they dont eat hair algae. I was thinking of getting tiger barbs but they nip. and maybe a molly but i dont like live bearers. What will get rid of this crap?? i already have 5 kuhli loaches, 6 serpae tetra, and 4 ottos. thx