Hanin I just went through a messy algae cleanup...It's not quite gone, but it is almost done.
I was overfeeding as I stated above (on purpose to nurse Leopards back to health).
I started rinsing PE Mysis & Hakari Brine in RO (Still add a few drops of Selcon, though)
I did 25% weekly changes or more
I changed GFO & Rox carbon weekly
I upped Vodka dosing to 11 ml per day
I did nine doses of algaefix (then stopped)
I changed out some sand (2 times, 7 days apart)
I changed out some rock with dry
At this point, all the algae is dead except a few areas which I assume is Bryopsis (Photo in my build thread, and as Dave has stated, it looks like Bryopsis! I apparently had numerous types of different hair algae "brands", which I thought was 1 species...those others died with the Algaefix & Nutrient Reduction)
Started Raising my mag using Kent M, I'm at day 2 at 1800. All Turbo snails have died, and all my acropora is looking better (probably more from the recovery of the nutrient issue)
Remaining patches of Algae are Starting to die.