It depends also on the kind of algae you want to get rid of. If it's a long algae then SAE (Siamese Algae Eaters) are the best. They eat any sort of algae and get about 3 inches long. Do your research before buying them though, flying foxes will be sold under the wrong name sometimes and they aren't any good at algae control.
Otos are good with green spot algae, but don't get them unless you have a large tank with small stock. They like to be in groups and max out at an inch long.
Bristle nose are good for general algae control, but they are pretty small for keeping with some big fish and will skin broadleafed plants if you have any.
Otos are good with green spot algae, but don't get them unless you have a large tank with small stock. They like to be in groups and max out at an inch long.
Bristle nose are good for general algae control, but they are pretty small for keeping with some big fish and will skin broadleafed plants if you have any.