• Designed and constrcuted with quality materials, multilayer principle and the largest surface area possible with no clogging. 
• Sponge material is easy to clean. 
• Filters are diesnged and contructed for quiet operation. 
• Air diffusion chamber produces minute and large number of air bubbles which increases the oxygen solubility in water. 

Take Note: 

• Before using, soak the sponge in the aquarium water for five minutes to increase nitrobacterias formation.
• Rise/clean the sponge using aquarium water instead of hot/warm water.