Pest?

[bsn_rn_cen]

I bought 10 different zoas all from the same tank. When I brought them home I dipped in coral rx and then bayer. For several weeks all but 1 has been open, happy, and growing. I zoomed in today and seen little things on the closed polyps. I'm unsure if they were moving because of the flow or because they are alive. Horrible pictures I know but are they good enough to tell if it's a pest?

 

[Lovemyreef2015]

Depending on if they move or not, my guess is either sand, Foraminiferans, or pods.

 

[bsn_rn_cen]

Thanks for the reply. Maybe I'll shut the flow off to see if it is actually moving or if it is just moving with the water.

 

[sfin52]

Sand it looks like. Some use sand grains in the tissues.