Involvement:General (knows how to use it) - Ownership:1 week to 1 month
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
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.
the shipping box is not hard enought, so mine spongue dont arrive in pecfect conditions.
- Easy to hanging on the wall of aquarium - No noise during operation - Increases oxygen solubility by produce air bubbles in the water
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