Overflow advice needed.

Discussion in 'General Discussions and Advice' started by flamming angel, 28 Sep 2010.

  1. flamming angel

    flamming angel

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    Hello reefers :)

    Okay so i need advice on the overflow size. I am in the process on building a 600x600 cube and need to know the ffg:

    1. What size should the overflow on the base of the tank be. ie the overflow from DT -> sump

    2. What size hole should there be from sump -> DT.
    25mm, 38mm,40mm etc?

    Looking for the most common sizes and those that i can get fittings for.

    Thanks
     
    Last edited: 28 Sep 2010
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  3. leslie hempel

    leslie hempel Moderator MASA Contributor

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    is the overflow going to be internal or external?

    if external i would go with a .300 x .100 x .300 with either a 32 or 50mm hole.. if you only have a 32mm drill bit drill 2..

    if internal i would make it a corner overflow .100 x .100 x .550, that will give you a waterlevel of .555 dependant on pump strength (2000-2500lph recomended for Lps and softies)
     
  4. flamming angel

    flamming angel Thread Starter

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    Going for internal. Thanks for the advice les
     
  5. RiaanP

    RiaanP Moderator

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    Drill a 50mm hole. can handle more flow under gravity that 2 * 32mm holes.

    And then you can use cheap PVC pipes from any builders yard compared to go out and search for 32mm PVC pipe.
     
  6. flamming angel

    flamming angel Thread Starter

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    Okay should i have the same size for the return?
     
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