Air bubble in overflow u-tube.. DIY Fixes?

Discussion in 'I made this!' started by Aqualung, Sep 3, 2009.

to remove this notice and enjoy 3reef content with less ads. 3reef membership is free.

  1. Aqualung

    Aqualung Stylophora

    Joined:
    Oct 30, 2008
    Messages:
    993
    Location:
    Buffalo, NY
    Wow my head hurts
     
  2. Click Here!

  3. Aqualung

    Aqualung Stylophora

    Joined:
    Oct 30, 2008
    Messages:
    993
    Location:
    Buffalo, NY
    Looks like lowering the oveflow box worked but a smaller u tubr is still in the works and on order.
     
  4. pgreef

    pgreef Fire Goby

    Joined:
    Dec 6, 2008
    Messages:
    1,344
    Location:
    Algonquin, IL
    I don't think that will work. The flow rate in the center will not change. You need to effectively make the center part area so the bubbles can't accumulate there with the higher flow.
     
  5. Aqualung

    Aqualung Stylophora

    Joined:
    Oct 30, 2008
    Messages:
    993
    Location:
    Buffalo, NY
    Yep! Lowering the overflow box increased the flow into the U-tube, no more bubbs. I]m ordering a 3/4" and 1" from the LFS.
     
  6. Thirtypack

    Thirtypack Astrea Snail

    Joined:
    Jul 30, 2009
    Messages:
    48
    I used Jkat's idea and put a piece of 5/8" i.d. vinyl tubing thru the original 1-1/4" plastic u-tube. There is no bend in the vinyl, there is no more gurgle from the stand pipe, and most important there is no more air in the tube. I did not lower the intake box, because I like the water level in th dt where it is. Thanks Jkat!
     
  7. Aqualung

    Aqualung Stylophora

    Joined:
    Oct 30, 2008
    Messages:
    993
    Location:
    Buffalo, NY
    Cool good job.. does the water still run through the 1 1/4" or just the 5/8". Hmm will have to try this.. the 1/2" tubing could not keep up with my pump, and the 1" worked good except it flattened. Lowering the overflow helped a little, but I am still getting bubbles. What Eshopps box and pump do you have... also size of DT and size of fuge.. lol.. thanks!
     
  8. Click Here!

  9. Aqualung

    Aqualung Stylophora

    Joined:
    Oct 30, 2008
    Messages:
    993
    Location:
    Buffalo, NY
    oop.. found pics of your tank.. nice fuge!
     
  10. Thirtypack

    Thirtypack Astrea Snail

    Joined:
    Jul 30, 2009
    Messages:
    48
    The overflow is eshopps pf 300. The return pump is a quiet one 1200, I wanted a low flow thru the fuge. Tank is 29g and sump is 10g. The water only goes thru the vinyl tubing, I pushed it thru the original plastic one so it would have the correct bend, and not push on the sides of the overflow box. It definately did the trick.
     
  11. Aqualung

    Aqualung Stylophora

    Joined:
    Oct 30, 2008
    Messages:
    993
    Location:
    Buffalo, NY
    Cool Thirty! GOnna try when I gets home from work.. I have the same overflow, my pump is more powerful though. If it doesn't work, I'm gonna use the sand/heat method, and make my own
     
  12. RHorton

    RHorton Pajama Cardinal

    Joined:
    May 11, 2007
    Messages:
    1,406
    Location:
    upstate NY
    my eshop uses a 1 1/4 also but the bubbles just zip through the tube. There is also another mod you can do:

    on the u tube drill a small hole in the very top of the bend, insert a small 1/2 inch long non flexible air line tube, cement it into the hole(you want it so it is flush with the tube)
    then hook a aqua lifter pump up to it. I haven't done this myself but I have heard of others doing it.