Overflow hole size too small?

Discussion in 'Beginner Discussions' started by Ebi Omer, 16 Aug 2013.

  1. Ebi Omer

    Ebi Omer

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    Hi. I have a 1260x550x600 (LxWxH) tank with corner overlow.

    I was wondering if my drilled hole is too small? It is 25mm.

    Return pump 2150lph with 20mm inlet pipe
     
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  3. Luan

    Luan

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    I have a 1.2x0.5x0.6 with a Jebao DC 5000 set at the 3rd or 4th setting which means it is between halfway and 3/4. I am running a skinny skim as well as a normal drilled hole with a 43or 45mm(?) fitting with a ball valve to regulate the flow. IMO rather too big with means of regulating the flow(ball valve) than too small
     
  4. dallasg

    dallasg Moderator MASA Contributor

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    should be fine, what you can do it branch of some piping on your return line that goes back to your sump, so you can redirect water back to the sump if the overflow cannot handle it..
     
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  5. Ebi Omer

    Ebi Omer Thread Starter

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    Thanx for the idea @dallasg.

    I was told that the hole might make a clogging sound and not handle the overflow - too much water needs to fit through the small hole.. Therefore my concern
     
    Last edited by a moderator: 26 Nov 2015
  6. FSeedat

    FSeedat

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    Hi @Ebi ... I have a 50mm hole, i have abit of water noise now and than but generally quiet, with a Durso pipe ... Glad to see you doing research ...
     
  7. Ebi Omer

    Ebi Omer Thread Starter

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    @FSeedat I tried to do as much research as possible before buying a tank and equipment, however I didn't come across the 'hole size' factor.. Hope its not too much of a problem with the hole getting clogged etc.

    If anyone does mention that it could be rather troublesome, maybe I'll look into having it drilled bigger, but for now I don't want to move the tank to the LFS..

    Or either I have the option that @dallasg has mentioned earlier
     
    Last edited by a moderator: 26 Nov 2015
  8. dallasg

    dallasg Moderator MASA Contributor

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    the option i mentioned i use on my small nano where i have a 300x300x400 tank with a 2000L return, if you place another filter sock under that you get even cleaner water :)
     
  9. FSeedat

    FSeedat

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    True, @dallasg knows his stuff, Guess only way is to try it
     
    Last edited by a moderator: 26 Nov 2015
  10. dallasg

    dallasg Moderator MASA Contributor

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    try and come to the jhb meet and we can chat
     
  11. 2balive

    2balive

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    I won't drill it bigger, but add more holes (if you want peace do mind), look at the Bean Animal design.
     
  12. Ebi Omer

    Ebi Omer Thread Starter

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    Thanx guys.. Will check the details about the jhb meet this month
     
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