This hair algae is growing again, slowly but surely....need an infusion of critters from the shore I guess. Thinking about removing the large "growing" rock pieces and dipping in solution of hydro peroxide to kill it all. I barely feed my tank, just 3 fish electric blue damsel, Fox face and Tomani tang with 2 shrimp and 3 florida conchs in 100 gallons plus various 2paly and 3 zoas colonies (small).