Hanging Bio-Sponge Filter for Aquarium

Pros: Pretty big sponge filtration system for tanks and aquarium where there is no another biological filtration system as botton type, is design where you cannot create a water flow as this system just use air pump and can be used as wall to enter air in the aquarium

Cons: Maybe the color can be black as the sponge. There is no spec of the sponge material, so believe is just biological type and not carbon activated ones.

Other: - Easy to hanging on the wall of aquarium - No noise during operation - Increases oxygen solubility by produce air bubbles in the water

Pros: This one is really great! To tell the truth I'm using it not the way it was designed (I really do not know what for is this air tube). I use it with my TetraTec ex 700 as intake in my 115 liter tank. I have to clean the sponge from time to time (the do get really dirty) and it takes a lot of time to clean them. But this sponge takes all the dust and little parts of plants and so on from water.

Cons: Haven't found yet

Other: Nice buy for a nice price