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  • Results 1 to 4 of 4

    Thread: Bottom Drain Gravity Fed Filteration

    1. #1
      PeakyBlinder is offline Junior Member
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      Bottom Drain Gravity Fed Filteration

      Morning Guys a newbie here so please be nice

      I am just constructing mt 1sy sleeper pond an are limited to space, after a little research I have decided to go with a bottom drain, with a home made mech & bio filter system.

      All of the systems I have seen that are with a bottom drain have the water inlet into the filter at the bottom, I wondered if you could have this at the top or does it have to be at the bottom to work.

      Also If you can use it at the top and I use a closed list barrel which I believe will become pressurized, would this be sufficient pressure to return the water to the pond without a pump, or would a pump be required.

      Science is not my best subject

      Cheers

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    2. #2
      aquaholic is offline Supporting Member
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      If science is not your best subject then changing from what most people do is going to be fraught with complications.

      Generally speaking an upflow filter configuration is more efficient on a gravity (open) filter system.

      Changing to a pressure (closed) system will require your barrel to be strong enough not to cave in or blow out.

      Having a high point in a closed system is likely to create an air lock so add a bleed vent.

      It's unclear if your pump will be sufficient without more details.
      Water pumps are better at pushing than pulling water unless you have a specialised suction pump.

    3. #3
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      Artemis is offline Junior Member
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      Welcome. What is a sleeper pond? Could you use MSPaint or some other simple image editing program to show us what you mean?

      You have to have a pump in your filter circuit somewhere to move water.

      Question, do you understand the cycling process, and how biological filtration works?

    4. #4
      danzcool is offline Senior Member
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      You need some sort of pump somewhere in the system to generate flow (unless you have a continual freshwater source at which point you won't be filtering). Traditionally the gravity feed setup goes through a few chambers until it is pumped back to the pond, and traditionally these feed into the bottom (or one side) and upflow to the other side where it overflows to the next tank/chamber. Sure it can go top to bottom, but the point of bottom to top is to allow any solids to settle in one chamber and not move onto the next.
      Koiphen member since 05-13-2004

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