Help green hair algae

[Amadod2]

So I been battling a green hair algae outbreak for two months, not sure how to get rid of the stuff. I have been doing water changes with rodi water ever other week, I tried changing feeding in the tank and I also reduced the hours my lights are on....anyone know of any product I can add not sure what else to do at this point. Tank has been running for 4yrs never had this before, and all readings are showing normal levels