[HeyPK]

If it is soft and breaks up easily, I would recommend guppies or other livebearers that graze on the softer types of algae. They should clean it up quickly.

 

[HeyPK]

One other tip is that well fertilized algae is more nutritious and better tasting for animals that graze on algae. If poorly fertilized, it can become inedible for various reasons, including being very low in protein and also accumulating a higher level of defensive, bad-tasting and/or poisonous compounds.