Diatoms?

[TheIcon308]

Thought I was having an algea bloom....but have chaeto in sump. Nitrates are 2.0- 2.5 and phosphates are .08 - .04 consistently. Wondering it this is actually Diatoms, and if so, best way to exterminate. I have been running U.V. for 2 days. Very minimal change. Help!?

 

[blaxsun]

It could be - could also be some other type of (minimal) algae.

 

[Jekyl]

Cyano?