What algae is this? (Growing extremely fast, within an hour)

Ostreopsis to amphidinium+prorocentrum. I dosed Microbacter7, Waste Away, silicates, Nitrate, Phosphate and ran UV 24/7 (except for turning it off for a short time after adding bacteria. Never saw a diatom "bloom" but I gradually saw diatoms replace dinos on the slides I looked at. It was a long process but I've been dino free for several months now.
I didn't have any blooms after the third installment of dinos finally effed off. Took a while for the coolia, but I didn't treat it. It just pooped out on its own after a while. The ostreopsis was a nightmare though. I had to manually remove that crap to keep it from killing inhabitants. Luckily I only lost most of my snails. No corals, nems or others. Frickin dinos, man.
 
You've gotten some good advice. Saltyhog, Dwest, Idoc have all helped lots of people in the huge dino thread.
It is prorocentrum. The fact that it is appearing in blobs, sheets and strings in a time frame of just a few hours means that they are assembing in those locations out of the water, so UV will make a large difference.
 
Thanks everyone for your help! I've installed a UV unit (AA 9w) for 2 days now with light back to normal schedule, and 95% of the dino are gone!! :)
 
@vetteguy53081 Thank you for the valuable advice. So

- Will the algae kill my snails and other inverts? Its capable but start the attack now

- Can I still feed the fish? Yes- do feed them but no coral foods

- Can I turn off the light completely until it's gone? yes- its best

- Liquid bacteria, you mean Bio-spira? Bacter 7
 

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