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Old 01-09-2013, 08:43 AM
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gregzz4 gregzz4 is offline
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Join Date: Oct 2011
Location: Burnaby, B.C.
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Are you still getting bubbles ?

I had this happening until all air was purged from my returns ( 3 nozzles total on one line )
Since I've installed a check valve it has stopped as the return no longer drains all the way back to the sump
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