I have a 30 gallon tank that's been set up for 1 year now. I've had a terrible problem with hair algae for about 8 months now. I've used Phosguard and Algone. I added a sailfin blennie. I've used an additive called STOP hair algae, as well as an additive by Weiss, I think. Also I've added some of the hair algae reef janitors and grunge from the garf site. I've even harvested it by hand, which seemed to make it thicker and longer. Nothing really seems to help and it always comes back. Water tests come out fine and I do regular water changes. I recently changed the lights and frankly, I don't know what else to do. Please help!!