Decided to give an update even if it is a bit sad. Dino's decimated my tank. It started in august, within 3 days they covered every square inch of surface of tank that had even a remote amount of light. Tried some solutions but none worked before I ran out of resources(time/money). Sadly I lost about 95% of my corals.
Anyway, having hit that point, I turned off my refugium, stopped water changes and let my nutrients climb. Few months later, while not out of the woods, the tank is much less filled with dinos.
My current microscope picture shows that those nighmarish fiends still exist so I am not out of the woods. (the little dots you see below)
Still debating on a UV light. Maybe it could have slowed the march of dinos, maybe not. Unfortunately there is not a lot of room left under my tank for that piece of equipment.
Lesson learned, NEVER EVER let your nutrients reach zero(or near enough to zero). It's flirting with death.