Diatoms?

[insurance_guy]

My setup is about 5 months old.
About 50 days ago, I let my phosphates and nitrates hit zero.
Got Dino’s and had to fight that off.
Increased phosphates to .1 and nitrates to 10 and fought off the Dino’s

Now I have a new problem.
I believe this is diatoms but I’ve had it for 30 days and it has not gone away.

Can someone confirm if this is diatoms?

 

[insurance_guy]

Current levels
77 temp
8 ph
ALK 9
Cal 487
Mag 1330
Phosphate.03
Nitrates 5