Dino ID please guys

[Matt1508]

Hi - Ive just started dosing a complete 2part and started getting brown sand a few weeks later..

Currently my nutrients sit at
No3 3ppm
P04 0.04 ppm
I currently do not use UV

wanted to see if it’s Dino or diatoms so got a microscope (should be 600x but it’s kind of still small) can anyone tell me what type this maybe so I can plan my attack on it

 

[Matt1508]

 

[Matt1508]

Not sure this embedded video works

 

[taricha]

ostreopsis-style spinning.

 

[Matt1508]

ostreopsis-style spinning.

Thanks for the reply mate, I did think Ostreopsis looking at the movement, I’ll get a UV ordered in - Any ideas what size / flow would be best for a RS Reefer 425 ? Assuming for Dino it’s best to install this in the DT temporarily.