SG

-Sponge filter provides biological filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility. -Create crystal-clear water, Idea for small aquarium. -Convenient and easy maintenance. -Applicable to different filtering systems as a prefiltration. -The use of an environmentally friendly high-level sponge as a filter, the use of the air pump -To ensure efficient nitrifying bacteria culture, to achieve clean and good water quality stability, effective oxygen and water quality filtration.