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Overflow modifications: making a bean animal style using only 2 drain pipes

Discussion in 'General Plant Topics' started by Tom Barr, Jun 6, 2014.

  1. Gerryd

    Gerryd Plant Guru Team
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    Hi Fab,

    When the full siphon ball valve is closed, this limits the intake flow somewhat. I let the trickle down the emergency drain to make up for it is all.

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    Hi Fab,

    When the full siphon ball valve is closed, this limits the intake flow somewhat. I let the trickle down the emergency drain to make up for it is all.
     
  2. ltb420

    ltb420 Lifetime Members
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    I think Antbug has done the same thing I did and glued up a saddle out of 1/2 inch plexiglass, his is just longer.

    [​IMG]
     
  3. Gerryd

    Gerryd Plant Guru Team
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    Thanks! Next question: how do you folks build the nice Overflow covers I see? How do they stay on with the slant on the overflow box?

    I will see if I can build one of these 'saddles' for each of my tanks...

    Appreciate the info.

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    Thanks! Next question: how do you folks build the nice Overflow covers I see? How do they stay on with the slant on the overflow box?

    I will see if I can build one of these 'saddles' for each of my tanks...

    Appreciate the info.
     
  4. ltb420

    ltb420 Lifetime Members
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    The cover comes from CPR. There is a rib along the bottom that sits inside the overflow box and keeps it from sliding off.
     
  5. Gerryd

    Gerryd Plant Guru Team
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    Thanks. I had figured on the 'rib' method but did not know that CPR supplied them.

    Looks like I will be in for 3 of them..

    Thanks again for the quick info....

    - - - Updated - - -

    Thanks. I had figured on the 'rib' method but did not know that CPR supplied them.

    Looks like I will be in for 3 of them..

    Thanks again for the quick info....
     
  6. antbug

    antbug Guru Class Expert

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    Thanks Gerry. It was quite simple to modify this overflow, but if I had to do it again, I would have purchased the dual CPR overflow from the start. If you do have a single like mine there are a few ways to go about it. I wanted a clean look with two parallel drain going down. I did not have enough room for another bulkhead next to the one that was there so I had to modify it. I measured and I had room if I plugged the center one and drilled two on the side if it. Now if you didn't care for that extra clean look, you could just drill one on the side and run an elbow and it would make things a little more simple. So for tools just a hacksaw and a hole saw for cutting the acrylic and glue.

    As far as the spacer. It's just 3 pieces of acrylic shaped into a U. Obviously you need to measure the thickness of your tank and the inside width of the overflow and build according. It works quite well and as you can see, I can now use the risers.
     
  7. antbug

    antbug Guru Class Expert

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    Great minds think alike!

    Yes, I little longer and I went thinner on the top piece. Not sure why I did that, it could have been what scraps were available at the acrylic shop haha.
     
  8. antbug

    antbug Guru Class Expert

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    Not 100% true. I ran my emergency drain pipe to the open side of my wet/dry. I didn't see the need to drill another hole when it wasn't completely necessary. In an emergency, my water will go down the emergency drain and skip the "dry" part of my wet/dry filter. Not a big deal in my book unless I'm totally missing something here.
     
  9. denske

    denske Member

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    I did the same thing, i figured when the emergency drain was not in use, it would just be a vent for co2 to escape.

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    I did the same thing, i figured when the emergency drain was not in use, it would just be a vent for co2 to escape.
     
  10. Tom Barr

    Tom Barr Founder
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    Mummm, good point.
    But you could if you wanted.

    Denske suggest venting of CO2, that was my only thing.
     
  11. ak24

    ak24 Junior Poster

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    Hej, very nice job! Like to see creative people, more than me. Help me understand one thing, somethig stay on the overflow, is this air pump ? If yes what for ? Another item looks like protein skimmer...
     
  12. thinbear

    thinbear New Member

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    Question: for a small overflow box with no room to drill extra hole at the bottom, this should work, right? The one I'm using is eshopps PF-Nano


    [​IMG]
     
  13. Tom Barr

    Tom Barr Founder
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    It would help considerably if you add another adjustable 90 elbow on the inside or lower. This way you run the lower postion at 100% or close, and then the emergency or throttle is the main factory overflow pipe. I'd use a 1/2 bulkhead, not 3/4"
     
  14. thinbear

    thinbear New Member

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    Thanks for the insight and quick reply :)
     
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