The TetraPond AquaSafe is a water conditioner specifically designed for pond fish, making tap water safe for them to inhabit. This liquid treatment comes in a convenient 16.9 ounce size (500 milliliters) and is perfect for maintaining the health of your aquatic pets. Made by the trusted brand Tetra in the United States, this product is essential for ensuring a healthy environment for your fish in your pond. With a lot of 3 bottles included, you can keep your pond water safe and clear for your fish to thrive.