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Old 01-26-2013, 8:55 PM
Whiterabbit Whiterabbit is offline
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Join Date: Oct 2010
Location: Bay Area
Posts: 6,893
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I plan on catching my rain water into a funnel that goes to the barrel. Then I add a pingpong ball to the funnel, or any ball that is lightweight and hollow (floats) on the funnel. That should reduce loss from evap, but water spilling into the funnel will lift the ball then flow in.
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