Dino’s or Diatoms?

[wagadodo]

Hi all, I’ve noticed an increase of brown patches on my sand bed. 5 days ago my phosphate was 0.22, today my phosphate is 0.07. Do you think it’s dino’s or diatoms? Not the clearest shot but hopefully you’ll be able to tell?

 

[sixty_reefer]

Hi all, I’ve noticed an increase of brown patches on my sand bed. 5 days ago my phosphate was 0.22, today my phosphate is 0.07. Do you think it’s dino’s or diatoms? Not the clearest shot but hopefully you’ll be able to tell?

View attachment 2979237

How’s your nitrates concentration?

 

[wagadodo]

NO3 is at 10ppm

 

[threebuoys]

Need to view under a microscope to be sure.

 

[sixty_reefer]

NO3 is at 10ppm

How long it’s been running for?