Review on Introducing the Premium Course Aquarium Sponge Filter: Extended Cleaning Intervals for 10-75 Gallon Tanks! Compare to ATI Pro or Aquarium Co-Op Filter by Brenda Wang

ADVANTAGES: Sponge prevents small fish and juvenile fish from being sucked into the filter Biological filtration works even when switched off; The nitrogen cycle continues as aquarium sponges keep good beneficial insects. Water intake from the bottom of the aquarium to increase the water surface and exchange CO₂ for O₂. Using an existing aquarium sponge filter will speed up the cycle of the new aquarium by adding beneficial insects.