truly these are todays biggest takes:
1- siphon remove it with hard work, taking out detritus stores along with it that feed these issues. add clean up crews, may or may not work, but the hand removal part simply disallowing it makes it gone and you repeat until you change other variables like lighting intensity/spec, checking nutrients with the typical high quality test kits, to try and keep them low, but mainly hand removing all waste and algae. a work oriented event, ends with zero algae and more work than luckier or more techy combos
2. add gfo and begin to starve it. testing w HQ test kits to avoid stripping corals too, an added risk. this method typically leaves all the algae in the tank and the detritus.
3.