Description
Using materials, this aquarium filter media can purify water, absorb harmful substances, and is convenient and can be used for a long time.These crushed stones are especially helpful in improving the aquarium environment and purifying the water..The pond filter media gravel Can be used in fish tanks and aquariums to provide a comfortable living environment for fish,.The aquarium coral bone sand is made with natural material, create a natural scene for your aquarium..The aquarium biological filter stones are safe for aquatic fish, suitable for fresh and saltwater environment, , no harm to your little fish.