You can start by increasing circulation, use RO
water for all topoffs/water changes and make sure your bulbs haven't passed their useful life. Siphon out as much as you can and give it some time. If you still have excess nutrients introducing some macro algae in the system may outcompete the bad stuff.
, 65 lbs Fiji LR
, 4" Aragamax DSB
, Coralife 2X96w CF
, CPR Bakpak II, CPR Aquafuge 12 w/ 2x9 Coralife Mini Aqualight, 4 Maxijet 600's, PCI 200W Titanium Heater, 2 Blue Green Chromis, 1 Gold Bar Maroon Clown, 1 Purple-Stripe Dottyback, Finger Leather, Trumpets, Rose Coral Open-Brain, Pagoda Cup, Xenia, Star Polyps, Yellow Polyps, Various Mushrooms, Toadstool Leather, 12 Astraea, 10 Nassarius, 4 Bumble Bee, 6 Cerith Snails, 12 Red Tip Hermits.