What they do is just increase the speed with new programming in the driver. Max speed with the 20's 2000 gph max speed with your your new 40 3200 gph. You will notice a increase in the level of audible noise on the dry side but it depends on the speed you run the pump at.
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank
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