Thanks. He's much better now. In my 40L I have 6 Kitty Tetras, 12 Mollies, 4 Pepper Cory's, 5 Synodontis Nigriventris, a Dwarf Guarami and a Betta. Am I over stocked...yes. I enjoy doing water changes and partial cleanings of glass, gravel and filters. Water tests are fine. All the fish are non...