If anyone is interested, I just took a pic of my scrubber. I cleaned the scrubber completely two days ago - on both sides.
I tell yah, once that hair algae takes hold - it grows quick! Especially with the right lights and flow rates.
Once I replaced the lights on my scrubber, all the algae in my tank has turned brown and died. Now I got a bunch of detritus left on my rocks. looks bad, but it's manageable. I guess I learned my lesson. lol.