I am having a terrible time with algae in my 55 gallon reef aquarium. I can not seem to get the coraline algae growing because of all the brown, green, and bubble algae. I have a cleanup crew (blue leg hermits, scarlet hermits, brittle stars, sand sifting star, nassarius snails, cerith snails, arrow crab, lawnmower blenny. What could be causing this problem? Is there something that I can do to treat this problem?