Diatoms???

[Ronk1109]

Tank is a little over two months old now. Started with a small brown spot on a rock and a few days later. Poof. I know this is all part of the cycle process. Just confirming these are diatoms.
phosphate about .1
Nitrate 5
Ph 8.1
Just cut lights back to 8 hours a day and decreased the white/red spectrum

 

[Marlon C]

Looks like it could be due to low nitrate and phos. Check them

 

[Ronk1109]

Looks like it could be due to low nitrate and phos. Check them

Diatoms can be from low nitrate?

 

[Marlon C]

Cyano/nuisance algae with 0 Phosphate/Nitrate

Tank has been running for around 6 months, and I've got a cyano and/or other nuisance algae problem (pics below). Knowing this tank is fairly new, I've somewhat ignored phosphates/nitrates. I had a hair algae breakout a few months ago and tested then. I got 0 ppm phosphates on an API test...

www.reef2reef.com

I'm not positive on diatoms but for sure dinoflagellates and cyano