My boyfriend and I just built my russian tort a new enclosure today! It is almost doubled in size from what he had before which is great! However, in his previous enclosure I was using just reptibark for his substrate which seemed to keep him relatively clean. In his new enclosure I am using a mix between coconut coir and some stop soil. Within twenty minutes of him exploring his new home he now looks like a ball of dirt! Also, his water dish now looks like a bucket of mud. I was told that coconut coir and topsoil was a great substrate but I am concerned about his eyes and perhaps his breathing. This stuff is caked on there pretty thick and I would hate for him to get sick. Please let me know if you have any suggestions or if this is okay for him to be covered in his substrate at all times. Thanks!!!