About 18 years ago when I was a few years into my first "established" SW tank, my hair algae got so bad that I decided to get drastic. I had no fish in the tank at the time, and there wasn't a whole lot of experience out there (certainly no internet forums such as this). I poured about 5 cups of bleach into the tank and just let it "marinate" for a couple of weeks.
Of course, before any introduction of life I had to remove everything and rinse, and rinse, and rinse, but BOY OH BOY was everything clean! LOL. The DR (dead rock) was beautifully white and clean of everything. The CC substrate was shiny as gemrock, but equally devoid of life, and the glass was so clean, I kinda wished I could keep everything just as it was. Moral of the story? You can't have 'em both. Either keep up on your tank maintenance, or suffer the consequences. (that's not directed to you, CLooB, just a rant.)
Over the years, I've baked off my CC substrate for a few hours at 400 degrees F before storage; at times when I've gone from CC to sand, or back again.
Well, I think I finally have my parameters where they're supposed to be, and for the first time in 20 years I have a handle on algae. No more algal problems for me. Sure took long enough!