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Old 03-28-2007, 01:04 PM   #11
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Without the size of the bulk head I cant help out much. What I do know is that your overflow must be bloody slow for an AC70 to outpower it with that head hight.
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Old 03-28-2007, 02:38 PM   #12
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Is there any water coming out of your overflow plumbing at all?
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Old 03-28-2007, 04:24 PM   #13
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Generally, if the pump is pushing more water than the overflow can keep up w/ you'll need to install a ball valve and a "T" in your plumbing, after the pump. That will enable you to lower the flow going to the main tank without burning up the pump. Just installing a ball valve to restrict the flow, with no "T" to relieve pressure/return water back into the sump, will cause excessive wear on pumps that are not pressure rated. You can get away w/ just installing a ball valve after the pump if desired, like this page shows towards the middle- http://www.melevsreef.com/sump.html
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Old 03-28-2007, 05:52 PM   #14
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Quote:
Is there any water coming out of your overflow plumbing at all?
Yes. And when I clean the inside of the glass or brush off the live rock (while it was curing) the water would be crystal clear within 20 minutes or so.
Pretty sure the overflow is rated at 300 gph.
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you'll need to install a ball valve and a "T" in your plumbing, after the pump
Yep, I was afraid of that, guess there's a trip to Home Depot in my future. I'll try to install it this weekend. Thanks!
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