Sharks the product I use is called Proline phosphate remover. it is not as good as the phosban or the rowa. I use it because its cheaper and has always been affective for me. link below. Sharks its hard to say. The best fight you can put up is to try to kill it at the source. If you do this eventually it will fade away, or be over grown back by the coraline.
http://www.aquaticeco.com/aquatic1v1...assitemid=9579
Curt you lost me on the part about cleaning off the algae and then putting it back in???
Limiting phosphates is a tough one folks, vertually everything we add to the tank has it in it. Once this inorganic phosphate hits the tank it is bound up mostly by bacteria, planktonic sources associated with DOC's , DOMs and detritus in general and by vegitation. It is a cycle, food hits the tank, bacteria and plankton eat it or begin to reduce it and bind it to themselves. They have very short live spans and die making the phosphate available again, then it is taken up by algae and/or bacteria once again which in turn die as they run out of a food source and the cycle starts all over again. Tough to break it. Alot of folks pull the algae and that in itself will export, but u run into the problem of the algae sporing. Algaes in a refugium tank will work but they have limited access to the phosphate do to thier location. The best location I have found to combat it is at the substraight level (as this is where most of the DOM's, detritus and so on accumulates). This would mean sand and LR. Good flow will stop detritus from landing on the rocks and will allow the detritus to be removed via the overflow and then to your skimmer. Sand is a little tougher exspecially if its a DSB, and I dont want to go thier, lol.
Picture it this way, the detrius is waste and will bind phosphats and other nutrients just as your algaes do, removing it is as important as harvesting your algae. Every place you have algae in your tank, sand rock and so of nutrients under it or flowing over it. Its the only way it can survive, remove that source and you are on your way.
Hooked I have heard some talk on the magnesium limiting factor on bryopsis, but to be honest I dont know enough about it to give you a good answer.
Mike