are you talking about the amanos or the rosy barbs eating the hair algae and the BBA?
I would say the best tools I have found for algae is fast growing plants, keep water flowing everywhere in the tank and make sure the phosphates don't clime above a 1 to 10 ratio with nitrates. This might mean you have to add nitrates.
I have wondered if adding CaCl will precipitate the phosphates. It should create Ca(H2PO4)2 and then precipitate as an insoluable powder. It works in plain water but of course there is lots of other chemistries going on in an aquarium. Like iron bonding with phosphates. I'll have to play with it one day.
If I get so much growth that I choke the water flow at the surface near the brightest part of the tank I always get hair algae. All I have to do is prune it so there is water flow and it goes away.
If I get so much growth that I choke the water flow at the surface near the brightest part of the tank I always get hair algae. All I have to do is prune it so there is water flow and it goes away.
My 29 gallon tank has water sprite, dwarf lilly and red fox tail that I have to prune weekly with no fertz, 55 watts of light and no C02 or Excel. Underneath I have slow growing low light plants. They get shadowed and this is OK for them. I encourage the fast growing plants to grow "emergent" so they can take CO2 from the air. I only have an inch between the water line and the hood but that seems to be enough.
Other than phosphates I have no water quality issues.
0 Ammonia
0 Nitrites
0 Nitrates
I change water to keep phosphates below 1.