Xinyou Bio Ball XY-360
XINYOU Bio Ball, This is a super bio-ball with a sponge inside. It provides the maximum surface for nitrifying bacteria growing. This is a super bio-ball with sponge inside, It cannot only provides the maximum surface area for nitrifying bacteria growing , but also promotes gas exchange and upgrade oxygen level in the water.
Active Carbon
Activated Carbon is an essential filter media for every aquarium. It can effectively eliminate odors, detoxifies harmful metals, purifies and softens water. Porous tissue structure assures its powerful chemical absorbing ability. Offers excellent chemical filtration ability to assure the safe and clear water quality. Net bag included.