Australian Pet Supplies Turtle Water Conditioner Block is specially formulated to ac as a pH buffer, to stop water going acid and to neutralize ammonia.
As the block dissolves, it releases calcium and benificial minerals to help maintain a healthy environment for your turtle.
Place whole block in the turtle tank. Over time the block will dissolve and is perfectly safe to be left in the tank.
Replace with a new block once it have dissolved. One block treats upto 40L of water.