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Old April 26, 2014, 10:06 PM
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SugarJ SugarJ is offline
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Join Date: Jan 2008
Location: Langley, BC
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Ya, don't run your pump on highest speed setting if you are seeing bubbles form, that's cavitation like from a prop on a boat. Mid speed is usually fine (I run mine on 2), and should be plenty for you as you've got tons of rad for what's in the loop. Those mini-bubbles in the rad will clear up. You can also leave the top of the res open while leak testing, that helps get the air out of the loop.
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