Pond Boss Forums INTRO Questions & Observations The finer points of a vaccum breaker vs. a siphon

Think of a siphon system except the inverted U pipe is different. Instead, it has a pipe sticking straight up and it is the type that has holes drilled every few inches. Its primary design is to ensure the vaccum is broken as the water receeds. It will always have a little air sucking in there unless the water level is high enough to completely cover it.
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