For a heavy bryopsis problem you should forget about adding things to eat it since it is not very palatable to anything.

Things to do
1.)Nutrient control - make sure your are keeping nutrients (especially phosphate) low. This won't get rid of bryopsis by itself IME but will hopefully slow it's growth. Also if you have high phosphates, once you manually get rid of the bryopsis you'll just end up with another nuisance algae like cyano or hair algae.

2.) Start plucking - If you keep plucking at it and removing all you can it will eventually crash and you'll be free of it. Don't spend a bunch of time removing it and then just wait until it grows all the way back. You'll be fighting it forever if you do it that way. When I had a probem with it on a tank I pulled all I could and then every day plucked any little bit I could see off with some tweezers. It took about two weeks for it to stop growing back.

HTH