Dual Overflow Help

Discussion in 'General Equipment, Hardware, Filtration' started by kewpiereefypewpie, Dec 28, 2017.

  1. Neo Jeo

    Neo Jeo Valuable Member R2R Supporter Build Thread Contributor

    Dec 6, 2017
    Likes Received:
    East Michigan
    Thanks Im not using a siphon system just an over flow box. I have a strainer on it so snails wont get in.

  2. Brew12

    Brew12 Electrical Gru Staff Member Team R2R R2R Supporter R2R Excellence Award Reef Tank 365 Partner Member 2018 Article Contributor Build Thread Contributor North Alabama Reef Club

    Aug 14, 2016
    Likes Received:
    Decatur, AL
    When it comes to drains such as yours they can operate one of 2 ways. Either air can get pulled into them with the water or the air is not pulled in and it is only water. Durso's are designed to pull air in with the water. These can be called partial siphon, partial drain, open drain or any number of other terms. The ones without air being pulled in are called full siphon.

    As an example, a 1" Durso can handle around 600gph of flow. That can go up to over 1000gph when a full siphon is established.
    Neo Jeo likes this.
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