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my siphon tube overflows made by Lifereef *never* lost siphon. Ever. They ran without incident for years. Stay away from the CPR-style overflows that require a powerhead to help clear air bubbles from the tubes. When the powerhead stops working, your overflow can fail.
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Jason Nugent
Reefcentral Moderator
"I have heard of a place where humans do battle in a ring of Jello."
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