I have a 20 gallon Aqueon Proflex Sump along with my 90 gallon display. I have some nuisance hair algae and am thinking of adding a refugium. In my middle chamber sits my skimmer. It takes about half the room. Can I simply put a ball of chaeto in there and add a refugium light? With my return pump and GFO in the third chamber I don't think I'd have the room to move the skimmer over. Thoughts? Thanks.