Diatom or Dinoflagellates?? Microscopic Pictures

[souluro]

It is severe when the light is on and weak when the light is off.

Five nassarius snails and five Turbo Snails have not died yet.

The symptoms improved after 48 hours of illumination off and UV-c application.
However, when the lights were turned on again and UV-c was removed, it reoccurred.

And I added GFO because I thought it was Diatom.

Look at my microscope picture and tell me what it is. Help me.

 

[EmdeReef]

Look like diatoms. Your YT would not be picking at Dinos, at least not more than once. What magnification is that? 40? At 100x it becomes easier to ID if you may have unarmored Dinos.

 

[souluro]

Look like diatoms. Your YT would not be picking at Dinos, at least not more than once. What magnification is that? 40? At 100x it becomes easier to ID if you may have unarmored Dinos.

Thank you for your answer.

The microscope picture on top is 10x.
and this microscope picture is 40x, 100x.

 

[EmdeReef]

Diatoms IMO. But let’s get some more eyes.

#reefsquad?

 

[Fudsey]

Doesn't look like dinos to me

 

[saltyhog]

Definitely not dinos.

 

[dbjonesjr]

Don't really know what diatoms look like but I'm familiar with dino and like others said that is not it.

 

[rkpetersen]

Look like diatoms to me. The symmetric brown chloroplasts are unusually shaped but they encompass nutrient storage vacuoles with large lipid droplets which are typical of diatoms. With different light you could probably confirm that the clear parts are silica frustules.

Edit: Somewhat like this:

 

[souluro]

Look like diatoms to me. The symmetric brown chloroplasts are unusually shaped but they encompass nutrient storage vacuoles with large lipid droplets which are typical of diatoms. With different light you could probably confirm that the clear parts are silica frustules.

Edit: Somewhat like this:

Thank you.

 

[Drew Fitzgerald]

Any opinions what these are?