Although my first yo-yo terrorized other fish in the tank, Im starting to think I liked him a little better ... the one I have now is constanly digging in the gravel and sending dirt all over the tank. Its floating about everywhere and I cant stop the loach. Hes not hungry either, we are talking about one well fed fat loach! I cant keep the water clean now, Yesterday I did a 40 % water change, the filter is running, yet there is still dirt! Does anyone know how to solve this? Also I used to gravel vac but not lately as most of teh bottom is covered in plants and structures.