It does look like Coolia to me, here’s a pic for reference. If you can, it would definitely be advantageous to post in that Mack’s group to be positive of ID, and they have a 36 page download on dealing with Dino’s.
Biggest takes to be aware of:
Balanced nutrients to help outcompete the Dino’s- they recommend 1:100 PO4:NO3 - Im running 0.1ppm and 10ppm
Dosing MB7 daily
Running UV 24/7 until a couple weeks after no signs of dino except for an hour after dosing MB7
No water changes until handled
You can siphon out what you can see into a 5 micron sock in your sump just make sure to not remove any water- this size sock will catch the dino cells