KINJOEK Filter Biological Filtration Aquarium Review

SPECIAL STRUCTURE - Our hollow sphere balls are made of high density plastic and sponge(the sponge with random color), which are lightweight but tough enough to keep their shape. It can create a favorable growth environment for aquatic creatures. LARGE VOLUME - The package contains 500 count hollow sphere balls, which is is enough for small household fish tanks. The ball is 1 inch in diameter, moderate size, providing a larger surface area for the growth of beneficial substances. REUSABLE MESH BAG - Each hollow sphere balls is pre-packed in the free mesh media bag we provided to help to maintain a good underwater environment. It can be reusable for a long service time and convenient for easy handling and cleaning. WIDE APPLICATION - Sphere balls are a great media and can be used in various scenarios. They are suitable for use in koi and water garden ponds, freshwater fish tanks, saltwater aquariums, aquaponics, fish hatcheries and much more. AFTER-SALES SERVICE - You will get a 30-day return and 100% customer support. If there are any questions about aquarium sponge, please feel free to contact us. Email us and we'll get back to you as soon as possible within 24 hours.