recently I noticed some tiny white specs on the bottom in my turtle's RES tank. Upon closer inspect I realized they were moving slightly. Worried about a parasite, I took my turtle to the Vet who declared him quite healthy and fit. A stool sample was tested for parasites and came back negative. The vet stated it could be some kind of environmental worm, which posed no threat to my turtle but is living off the waste on the bottom of the tank. I managed to isolate one and took some pictures and videos. Please see the this imgur link https://imgur.com/a/ogSkWPZ
Does anyone recognize this or know how to git rid of them without harming my turtle? I suspect Planaria but am not sure.
Thank you!
PS. I have also posted this on reddit because I was figure the more people I asked the better