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Old 10-19-2011, 05:13 PM   #1
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return pump for 75 gallon tank

So i have been getting alot of bubbles in my tank lately and cant figure out why i checked everywhere for leaks their are none, the pump has no air in it, and i have a bubble trap on my sump. i was wondering could it be that my pump is to strong? its mag 9.5 and i have been reading alot of ppls threads and for 75 gallons i have only seen mag 7 being used. do you guys think a less stronger pump would stop my bubbles?
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Old 10-19-2011, 06:00 PM   #2
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A strong pump with too small or too long an intake can "cavitate." This also happens with powerful prop and jet powered boats. You may have too much restriction on the intake, this will cause the impellers to knock gas right out of solution and produces bubbles and very inefficient pumping.
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