Hi, i had a huge hair algae problem. The way i solved it was by lots of water changes w/ RO water. My phosphates were out of control. I also purchase a ton on snails and crabs. I also cut way down on feeding, definately helps. I was kinda scared that my fish wouldn't be able to handle it but it seems their actually more happy now w/ good water than getting more food. Anyway, i feel the water changes were the key for me.
Dave