Brett Posted November 10, 2021 Share Posted November 10, 2021 So, I know the basics of how a sponge filter works. Bubbles lift the water, create a vacuum, and draw water through the sponge to fill it. My question is, why are larger sponge filters always WIDER? Would it work to make one taller instead? Stack two or three sponges, and elongate the inner section? That way you could have a larger filter, but not take up more of a footprint in the tank. Hope that makes sense, and thanks for the advice! 1 Link to comment Share on other sites More sharing options...
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