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Old 04-21-2013, 04:12 PM   #11
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Put some rubber caution on the plastic hose touching your stand and make sure its not leaning on your sump.
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Old 04-23-2013, 09:39 PM   #12
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All, thanks for your suggestions. None of the items in the tank have touched the sides, and I have put filter material under both items.

Still not quiet.

Is it bad to put on a valve to turn down the flow of the pump a little?
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Old 04-23-2013, 10:34 PM   #13
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I would suggest adding some sort of bumper on the sides of the pumps. If its motor noise your hearing and not water noise then somewhere a motor is transferring vibration to the sump and/or stand. If it just has rubber under the pumps it probably won't cut down vibration at all, the trick is to have something to absorb vibration. My return pump is on suction cups and I can't hear it. Another option is to mount some rubber tubing under the pump and that should work well. The return pump looks very close to the baffle and adding something between could help also. As far as the valve on the return line I don't see an issue with it. Most people have a valve on the return so they can balance out the return and drain to prevent the syphon flush and gurgle.
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Old 04-23-2013, 11:13 PM   #14
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is this a new return pump or the same before you moved to a new location?
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Old 04-23-2013, 11:31 PM   #15
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It looks too big for your sump. A ball valve is a good idea and it won't hurt. It will surely quite it down to optimize your flow. Oops I would take it back. A restriction actually will make more noise.
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Old 04-24-2013, 10:22 AM   #16
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Quote:
Originally Posted by jeffaquarius View Post
It looks too big for your sump. A ball valve is a good idea and it won't hurt. It will surely quite it down to optimize your flow. Oops I would take it back. A restriction actually will make more noise.
I restriction could lead to more noise but that depends on how much. I small restriction in flow will be negligable, a large restriction will likely add to the noise. I personally have my return choked back about 25% and I get no additional noise.
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Old 04-24-2013, 02:22 PM   #17
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it is possible that the noise is inherint to your return pump. That is if you have already eliminated your skimmer by turning it off. The pump head pressure might have went up when your DT is mounted higher or longer than before. Thus it is making more work for the pump.
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