If you confirm it is in fact Dino’s.
Stop doing water changes stop cleaning your glass and get some other algae to start growing in there to outcompete. Also raise your nitrates and phosphates a bit. Chances are your nutrients bottomed out. blow off stringy algae to get in water column and change our socks every 1-2 days if you run them
Prepare by blowing this stuff loose with a turkey baster and siphon up loose particles.
Turn lights off (at least white and run blue at 10-15% IF you have light defendant corals) for 5 days and at night dose 1ml of 3% hydrogen peroxide per 10 gallons for all 5 nights. If you dont have light dependent coral- turn all lights off.
During the day dose 1ml of liquid bacteria (such as bacter 7 or XLM) per 10 gallons.
Clean filters daily and DO NOT FEED CORAL FOODS OR ADD NOPOX as it is food for dinos.
Day 5,, you can start with blue lights - ramping up and work your white lights up slowly
I have noticed when my parameters get out of whack due to me getting busy and slacking, they come at me. Likely Dino. Lots of ways to fight them. Pick your favored method and don't throw in the towel. No matter how you choose to battle them, I think uv would be very helpful, even a cheap GKM for temporary use.
Chrysophyta (golden-brown algae) The Chrysophyta are the golden-brown algae and diatoms, which respectively account for 1,100 and 40,000-100,000 species of unicellular algae. These algae occur in both marine and fresh waters, although most species are marine. The cell walls of golden-brown algae...