hair

Hey all, Have been battling an outbreak of hair algae in the tank at work for a little while now. Reduced the lighting duration greatly, been manually removing and upping the water changes, but it still persists. Picked up some Flourish Excel the other day and plan on dosing that. I dosed...

Anyone know what can lead to red hair algae in a freshwater aquarium? I know its a common problem in reef tanks, but doesn't generally seem to be an issue in freshwater tanks. Its a 90g with driftwood and PFS, mostly eartheaters in the tank. The fish have been acting really skittish lately...