id please dino or diatoms..

[chicago]

Please help id these..
Thank you... taken from sand bed top this am..

 

[chicago]

 

[chicago]

 

[paraletho]

I would say Dino’s from the movement. Most Ostreopsis that I have seen have more of a whirling movement. Though this is not a proper ID for the organism I would guess that it is one of the sandbed types.

 

[underground_corals]

with how they are moving i would say Dino’s for sure

 

[chicago]

I am betting it is the sandbed type Amphidinium.. I had Ostreopsis months ago.. now its Amphidinium. Plan is to start dosing some more pods and phyto