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Soothing Shrimp

Double Sponge Filter Tricks

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On 11/7/2015 at 10:42 PM, Citycode01 said:

Another trick, you can attach a water pump to the top of the filter and close that air tubing hole and it will be much better water flow. I've made a test and it takes 29 sec to fill 1L bottle with water, my other sponge filter operated by ait pump (150L/h) do it for 45 sec.

This pump is only 5V and completely silent (very cheap on eBay), I also found 8mm silicone hose which fit perfect fit into the filter tube.

The only disadvantage is that it doesn't have an air bubbles for better gas exchange and it's good to have the second filter operated by air pump or an airstone.


You could always plumb the old inlet to above the water line with tubing and small valve. That would allow the pump to draw in small amounts of air and mix it with the discharge. 

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