Review on 🐠 Enhance Water Filtration with Powkoo 4-Layer Corner Sponge Filter for Aquariums by Tanya Luna

Construction is OK but the pores of the sponge filter are darn small and the air line through the cylinder doesn't have enough energy to pull particles out of the water and trap them in the sponge. Basically I have to go to the store to buy a sponge with the right (large) pores to see if I can use it. If I'm wrong afterwards, I'll come back and rewrite this review. However, at this point and compared to my other sponge filter with larger pores, the sponge pores on this mini sponge filter are too small to work effectively.