Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Chara / Algae ? Treatment

There is a much better method but your state does not allow it - grass carp and tilapia both eat it very well. The tilapia also eat the algae before the Chara. I think some in MI have used tilapia so there may be a MI law gray area on this. One has to be careful to not add too many because you want some Chara present to use nutrients and naturally compete against/with the filamentous algae(FA). It is a battle between Chara and FA for nutrients. Chara is less offensive than FA so in my experience it is best to have some Chara that reduces the amount of FA.