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Results 1 to 4 of 4
  1. #1

    Join Date
    May 2013

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    Default help with diy 3 tank sump

    0 Not allowed!
    im in the process of adding a sump to my exsitnng 55 gallon fowlr tank. i had an idea of connecting 3 10 gallon tanks instead of splitting a 30 galllon into 3 section. I plan on drilling the tanks installing bulkheads and piping using a "gravity" system to get the water to constantly flow from one tank to the next.

    now my question is what size bulkheads would be best for this setup?
    and if i use 1 inch bulkhead does that mean the actually piping will 3/4 in?


  2. #2

    Join Date
    Jan 2010
    Saskatchewan, Canada

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    0 Not allowed!
    1 inch bulk head flanges are meant to be used with 1 inch pipe and fittings. If you want to use 1 inch bulk head flanges with 3/4 inch pipe, you will need some reducing fittings as well. I would keep it all the same and avoid the extra cost reducing fittings

    The correctly sized bulk head flange would need to be determine by how much flow you want going through the sump(s)

    If you would let me know how much flow you want, I can recommend a bulk flange size for you.
    If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
    "Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
    Fishless Cycle Cycling with Fish Marine Aquarium Info [URL=""]

  3. #3

    Join Date
    May 2013

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    0 Not allowed!
    i have been looking at a diy overflow box that does 300gph do you think that would be strong enough?

  4. #4

    Join Date
    Oct 2009
    Longmont, Co

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    0 Not allowed!
    Strong enough for what? You mean high enough flow rate? This might help you-

    Also DIY overflows can be tricky. What design were you looking at?

    I have worked with connecting tanks before in a sump setup. It can be great when it works. I took a non drilling route though and used massive PVC elbows to create a water bridge/siphon between them. All I needed was some cheap PVC and some sort of suction source at the top to pull out the air and complete the siphon. I originally used venturi lines from a pump, then upgraded to an aqua lifter. Hooked it up to the top of the PVC and it kept the pipes under constant suction. With 2x4" pipes it was able to easily handle 1500gph.

    The biggest advantage to this was I could easily isolate one of the sumps, and I didn't need to drill. Another upside is I can now use those tanks for something else down the road.
    Who is "General Failure" and why is he reading my hard drive?

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