Algae is everywhere .... it grows when the conditions are right. I wouldn't try to keep algae totally out of the tank (you can't). As long as the tank condition is such that the algae is not a nuisance, I wouldn't worry.
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.