Another Dino ID

[Aaron75]

Please help ID these. Only effects the sand, disappears at night and non existent in shaded areas. They look like little tumbleweeds, almost perfectly circular with spaghetti insides. Thank you.

 

[Aaron75]

Nutrients are Nitrates 6.4ppm and Phosphates .07

 

[taricha]

Coolia dinos

 

[Troylee]

Coolia dinos

Those things suck! Lol.. that’s what I had in my little cube.. thank gawd they didn’t transfer to my huge tank with the corals…

 

[Aaron75]

Coolia dinos

Yep, certainly looks like those! How would you battle these? Nutrients are up, I've been dosing Silica for 2 weeks? but have seen no change