Another round of "What is this?"

[Kiyoshi]

Sorry for another thread of, "What is this growing in my tank," but at this point I just need to get it taken care of. Is it simple hair algae or something more serious like dinoflagellates? I see the sticky threads about dino, so if someone can confirm that, I'll read through those to battle it.

Ammonia, nitrites, and nitrates are all 0 ppm, but I haven't checked phosphates recently. Salinity, pH, alkalinity, and calcium are all within normal parameters. Currently have some corals and 2 clownfish in the 65 gal tank. They're doing fine so far, but I worry about treatments that would harm them. I have been losing quite a lot of cleaning crew, so I'm leaning towards dino, but need a more experienced eye before taking action.

Hopefully these pictures help. Thanks in advance for any responses!

 

[dvgyfresh]

I would say definitely looks like Dino’s but without a microscope cannot say for sure. Nitrates at 0 does produce bad algae tho I would increase to atleast 5-10ppm

 

[Subsea]

Zero nitrate & zero phosphates are a recipe for disaster in a reef tank.

Check the reef cleaners link for identification and treatment.

Nuisance Algae ID Guide- Reef Cleaners

Nuisance Algae ID Guide. Red Slime, Cyano, Cyanobacteria. Green Film Algae, Film Algae. Green Hair Algae. Green Turf Algae. Bryopsis pennata and B. plumosa. Bubble Algae, Valonia. Lobophora. Blue Green Cyano.

www.reefcleaners.org