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The Greater Victoria Aquaria Society - Comments - Blogs

Blog Comments

  1. thedwightguy's Avatar
    "notanother" good example of ordering "outoftown" stuff that requires some basic engineering knowledge.
  2. NAJetSet's Avatar
    I've got a simple ball valve on the supply and the return, with a check on the supply of course. It drains into a sump underneath.
    Although a gate valve might be more appropriate for the drain, to allow greater precision in flow adjustment, I designed the size of the tube and linear weir length to; a) allow for a significantly larger return pump, and b) to have sufficient volume to allow for changes in air pressure from things like opening a window or door, or barometric pressure. All of which play a role in setting the height of water in the tank as well was the overflow tube. Subsequently, I find that the height of the water column in the overflow tube changes throughout the day +/- ~1/2", which is fine given that any deviation in that range (the allowable range is actually a lot more broad), well result in a continued full siphon. And, as long as the surface level of the water in the over flow tube never matches or exceeds that of the running level in the Display Tank, the overflow is acceptably draining (matching) flow rate produced by the return pump. In case you are wondering I am using a return pump rated at 935gph max.
  3. Newtious's Avatar
    i would love to see the bottom plumbing on this setup.. most of all how you keep water in the pipe.. is this like a closed loop but with an over flow? or does it drain into a sump? do you have it valved on the over flow side?? i have a ton of questions!
  4. Nasoblond's Avatar
    OMG.....Crazy story......thanks for the heads up!!!
  5. NAJetSet's Avatar
    for those that asked:
    FPT = Female Pipe Thread
    MPT = Male Pipe Thread
    IPP = Industrial Plastics and Paint