Aqua Accents Decorative Aquarium Substrates Terminator Teal Sand is made from epoxy coated aquarium sand which is safe for all freshwater and saltwater aquariums. This clean substrate does not require rinsing and will not cloud your fish tank's water making it perfect for fishbowls or nano tanks. Aqua Accents Decorative Aquarium Substrates Terminator Teal Sand is attractive way to add depth and variety in your aquarium.