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#22
01-27-2011, 10:24 PM
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Even if both are considered reliable I'd choose an external (not HOB) overflow anyday. No holes drilled in the tank itself and it's strictly gravity without any reliance on a siphon. Even if both are safe I'd choose the external. Better with resale too since 99% of reefers would prefer a true overflow as opposed to a tank that's not 'reef-ready'.
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