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Thread: Concrete Pond and its standards, who knows?

  1. #21
    MCA
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    Honmei MCA's Avatar
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    issue on them,
    They are PVC surrounded by concrete. How do you have an issue with a drain with an anti vortex cover? The bigger risk is if you have a slow flow rate on the pipe from the drain sump to the filter pit....the pipe becomes a settlement chamber. That is bad karma, bad joss. With a 4" 110mm pipe, keep the flow rate in the 4000gph rate at a minimum....more is better.

  2. #22
    Honmei ricshaw's Avatar
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    Quote Originally Posted by MCA View Post
    They are PVC surrounded by concrete. How do you have an issue with a drain with an anti vortex cover? The bigger risk is if you have a slow flow rate on the pipe from the drain sump to the filter pit....the pipe becomes a settlement chamber. That is bad karma, bad joss. With a 4" 110mm pipe, keep the flow rate in the 4000gph rate at a minimum....more is better.
    A pond with a drain with an anti vortex cover and proper flow rate can still have issues if not designed properly.

  3. #23
    Sansai Reza's Avatar
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    Quote Originally Posted by ricshaw View Post
    A pond with a drain with an anti vortex cover and proper flow rate can still have issues if not designed properly.
    Everything even in best quality with wrong or weak design will fall in problem. I have experienced several times.

  4. #24
    MCA
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    So are talking about design, components used, or implementation/installation? All those are very different things.......that all have to come together to make an effective and relatively trouble SYSTEM.

  5. #25
    Tosai
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    Quote Originally Posted by MCA View Post
    With a 4" 110mm pipe, keep the flow rate in the 4000gph rate at a minimum....more is better.
    I agree with the suggested flow rates.

    4000 GPH in 110mm pipe = 0.44 m/s
    4000 GPH in 4" pipe = 0.52 m/s.

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