Tidy Turtle™ keeps turtle bowls, tanks and aquariums clean by using naturally occurring beneficial bacteria to remove sludge from the gravel substrate. Contains billions of bacteria and enzymes that help break down turtle waste and improve water quality, naturally. Odors caused by foul water are greatly reduced. This formula contains specifically developed sludge removing bacteria used to remove organic debris from aquarium gravel, filters, tubing, etc. Tidy Turtle contains only naturally occurring or beneficial bacteria and augments beneficial microbes already present in the turtle's environment.