Dino identification

[Cassklar]

Can someone please identify this type of Dino I’ve dosed vibrant to kill off bubble algae it’s working but I am ending up with these now stands of algae with bubbles I have no sand bed as it is a bare bottom sps tank vibrant is working and killing off my bubble algae I check every other day my phosphate and nitrates it ranging between .02-.05 pho’s and 5-15 nitrates as I dose to keep them up but still ended up getting these dinos. Any help would be appreciated

 

[ScottB]

That is ostreopsis.

UV at 1 watt per 3 gallons with super slow flow.
Dose up nitrates and phosphates. >10 and > .1 respectively
Run GAC; these things are quite toxic (plus they smell bad)
Clamp some filter floss in high flow/light areas of the glass. Rinse each night.
No phyto, no aminos anywhere near the tank for 6 months.
No GFO, and no water changes until 2 weeks clear.

Should be clear in 2-6 weeks if you do all steps.