To get rid of the algae, mix up a solution of 50% tank water and 50% hydrogen peroxide (the 3% solution that you can buy at the walmart or drug store for treating cuts and scrapes) plop the frag in the dip, wait 3-5 minutes take it out and rinse it, and return it to the tank. It will fizz for a while, and you won't think you did anything for the algae, but tomorrow the algae will be dead and white, and the zoas will be opened up just like before.

I use this to treat for nuisance algae on frag plugs if my cuc doesn't get it. It works on all nuisance algaes, including bryopsis.