MUCH Aquarium Filter Pad - Cut to Fit - Dye-Free, Premium Koi Pond FINE Filter Media Roll for Clear Water - Aquariums, Ponds or Water Gardens ?BluePlusBlack?

* Multi-layer composite structure, coconut shell charcoal, activated carbon, bamboo charcoal, strong adsorption capacity, water purification * Cultivate beneficial bacteria, with dense holes, enough space for the growth of nitrifying bacteria and an excellent growth environment * Purify water, absorb impurities, relieve water yellowing, and cleverly purify water * Blocking germs, blocking germs and bacteria in water * Remove peculiar smell, bamboo charcoal can effectively absorb peculiar smell and relieve water fishy smell * Balance water quality, remove chlorine in water, reduce ammonia nitrogen and nitrite content, and balance PH Specification Material: Sponge Color: Blue and Black Size:49*41*2cm     Package included: 1*Pond Filter Aquarium Filter Media Pad