you can try and agitate your substrate and remove it with a siphon when you do your water change.
Feed your aquatic life less, move the tank away from direct sunlight, and change the amount of light the tank gets.
A combination of any of those should help. If it doesn't seem to work you may need to buy a UV light.
Many fish and animals feed of algae but its irresponsible to buy them for that soul purpose, and fish don't always act the same when put in different tanks with different water quality.