Emmett my friend, let me be the ass here and say that your substrate would be perfect in a deep sand bed, i dont want to see you with any issues at all, but right now would be your perfect opportunity to change your shell floor. Ill look up the pictures of when i purchased my tank and what it looked like. Please change it, or constantly sift it ie, use the non netted end on your fish net to stir it up. Good luck and dont get angry with my statement, its only my thoughts.