Hi Jess

Welcome to Frog Forum. We have a very active aquatic clawed frog forum, so please check it out.

Concerning algae control and frogs, it is best not to use any chemicals with your ACFs and ADFs. The best advise is to scrape the green algae. In their native habitat, these frogs live in water that has heavy algae growth, so that would not be a problem for the frogs, although for us humans, it looks a bit tacky

If you want to eliminate the unsightly algae naturally, I suggest planting your aquarium with a variety of fast growing aquatic plants, such as, Cabomba, Hygrophila, Vallisneria (even floating plants will do), The plants will eliminate algae through a process called allelopathy - this is a biological process whereby one organism produces biochemicals that will restrict the growth of another organism.

Good luck