What are these worms in my turtle tank they barely visible white and dont appear to be able swim as kind of just wiggle around on the bottom I found probably a couple hundred them?

There are a few possibilities for what these worms in your turtle tank might be:

- Planaria: Planaria are small, flatworms that are often found in freshwater aquariums and turtle tanks. They are white or brown in color and can range in size from a few millimeters to several centimeters. Planaria are not harmful to turtles, but they can be unsightly and can compete with your turtle for food.

- Detritus worms: Detritus worms are small, white worms that live in the substrate of aquatic environments. They feed on organic matter, such as decaying plants and fish food. Detritus worms are not harmful to turtles, but they can be unsightly and can contribute to the buildup of organic waste in the tank.

- Anchor worms: Anchor worms are small, parasitic crustaceans that attach themselves to the skin of turtles. They are white or brown in color and can be up to several millimeters in length. Anchor worms can cause irritation and discomfort to turtles, and they can also lead to secondary infections.

If you are concerned about the worms in your turtle tank, you can take a sample of the water and the worms to a pet store or veterinarian for identification. They will be able to tell you what kind of worms they are and recommend the best course of treatment.