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It depends on the fish, if they eat algae then you could but many other things like fish or shrimp youll need to have them in a different tank. They would eat them so fast they wouldnt be able to reproduce
I grow algae on purpose for my African cichlids so they can graze all day. They do a good job of cleaning everything. Then I grow more just by leaving the lights on for 12-13 hours a day for a week or so. Just gotta keep the glass clean and I get a nice green algae growing.