40 Gallon Breeder SUMP Project

Discussion in 'Lighting, Filtration & Other Equipment' started by wakerider017, Dec 28, 2011.

  1. wakerider017

    wakerider017

    Joined:
    Oct 20, 2011
    Messages:
    9
    I just got a brand new 40 gallon breeder that I intend to make into a sump.

    I have a preliminary plan that I'd like to run by you guys before I do any building.

    Some things I had in mind prior to building the system: (Not saying they are right, but these are my thinkings and assumptions.)

    - I have an external pump, so it has to go on one of the ends. (No middle section return pump. This means I will have an inline system which I feel is much more simple anyway.)
    - I will be using glass baffles instead of acrylic. I feel 1/4" glass for baffles is the best choice possible.
    - I felt 1.5" bubble trap 'channels' would allow more flow that the more commonly used 1" channels.
    - I maximized water volume in the sump with tall 10" baffles (yes my skimmer will fit even on a stand) while still allowing +/- 4" of space (which equates to over 10 gallons) in case of a sump overflow/siphon accident
    - The overall dimensions of the tank in the model may look funny. They are they inside dimensions, and are what really matters ;)
    - The return pump section will be drilled to accommodate an Iwaki MD55RLT External Pump


    The system from left to right: (Overflow/Skimmer Area > Refugium > Return Pump Area)

    [​IMG]


    Opinions? How does everything look. (flow, water height, etc.)
    wakerider017, Dec 28, 2011
    #1
  2. wakerider017

    wakerider017

    Joined:
    Oct 20, 2011
    Messages:
    9
    About the possibility of pump going out or power failure which results in back siphon:

    I have a 120 gallon tank. It is 60" x 18". I figure if the return nozzles are 2" below the water line (Is this a good place for them??) then the dimension of water to be siphoned would be 60"x18"x2" = 2160 cubic inches = 9.35064935 US gallons

    Depending on the water level in my sump, (10 inches being the minimum for it to clear the lowest baffle, & 13 inches being the maximum before it starts cascading over the tallest baffle) I will have about X amount of spare space:

    2795 (cubic inches) = 12.0995671 US gallons @ 10" of water in sump
    2174 (cubic inches) = 9.41125541 US gallons @ 11" of water in sump
    1553 (cubic inches) = 6.72294372 US gallons @ 12" of water in sump


    Looks dangerously close with 11" of water!!!!!

    I was also thinking about drilling an overflow hole (much like that seen on a bathtub or bathroom sink) in the tank and piping it to a nearby drain. (Very convenient to have a drain next to the system).
    wakerider017, Dec 28, 2011
    #2

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