I am having a problem with algae. My husband fed my fish while I was out of town, and he fed them the old pellets I had. It raised the phosphates and caused an algae bloom. I don't know what else it could be. How can I get rid of it. I have bubble and hair algae and it's driving me NUTS! I was running Phosguard, but it didn't seem to help. Any suggestions? Thanks.