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Old 01-01-2013, 10:32 PM
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Mike was referring to a hole in the return line to prevent backsiphoning of the DT
The siphon will break wherever you drill the hole, instead of it siphoning to the bottom of your return outlet
If you go this route, keep in mind that the drilled hole will be spraying water while your return pump is on, so plan where you want it pointing
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