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Old 06-09-2017, 03:52 PM   #6
satan_gal's Avatar
Join Date: Apr 2006
Posts: 1,714

Originally Posted by burntrubber View Post
It might work either way. Pump may not be strong enough to push up to the OHF if the second return is too big.
Usually open system will not have such problem la.
Unless filter choke or something.
Pump push up... the most if the return is not strong enuff.. will just... have no power lor.. or only 1 return will be used.
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