Keith & Rose
decided to build a new pond on a larger scale than the one
they had, and work began in the Spring of 1992. The was up
and running within 7 to 8 weeks, but as always it takes a
lot longer to complete the walls, rockeries, etc around the
pond. |
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The
construction of Keith's pond is unusual because he decided
to build a round pond using a polypropylene tank which was
built by Bob Pateman Enterprises of Essex. The pond is 12 feet
diameter with a tapered conical base which gives a depth of
4ft 6ins with 5ft in the centre where a 17 ins diameter bottom
drain is located, and this is connected to a 4 ins pipe.
The pond was made up from flat polypropylene sheets and the whole structure was
made up and welded together in the top of the garden and the drain and various
inlets and outlets were added at this time.
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group of friends and a mini JCB then dug out the hole one
week-end and then the whole pond was lowered into the whole
and it was then backfilled. During the welding and installation
procedure the tank has not remained completely round, but
this does seem to improve the overall layout. The pond alone
holds 2850 gallons, and the whole system complete with filter
and the vortex chamber holds 3,500 gallons. |
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Water
flows from the pond via the bottom drain or the mid-water connection
to the vortex chamber. This is 30 ins diameter and 48 ins deep,
and is also made of polypropylene. It was originally intended
to use the bottom drain connection during the Summer and the
mid-water connection during the Winter, but after experimenting
Keith has now decided to use the bottom drain only.
From the vortex the water flows into a three bay pvc filter. The complete unit
is 8 ft long x 20 ins wide x 20 ins deep. Each of the three bays have a drain
which is connected to a single pipe which discharges into the drain box. |
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Click
on any image for a larger image |
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Pond
details |
Gallonage
Dimensions
Construction
Shape
Bottom drains
Filter feed
Year completed
Time to complete |
3,000.
12ft diam x 5ft deep.
Polypropylene tank.
Circular.
17" drain with 4" pipe.
Bottom drain to vortex, plus mid-water.
1993
2 months. |
Filter
details |
Gallonage
Type
Media Bay 1
Media Bay 2
Media Bay 3
Settlement chamber
Aeration |
278.
3 bay fibreglass unit.
Brushes.
Japanese matting.
Canterbury spar..
Vortex chamber.
Hiblow 40. |
Pump
details |
Type, make, etc
Pumping capacity
Location
Water return |
2 Grundfoss 15/60.
Approx 1,200 gals/hr.
Chamber after filters.
2 Venturi. |
Other
equipment |
Ultra violet
lamp 1 x 56 watts.
Power skimmer with P1400 Amphibious pump. |
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For the full schematic drawing
click here
In July 2003 the filter has been changed to a Nexus unit. |
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| UPDATE 2004. This
pond has gone through many changes in the 12 years since it was
built, and in 2003 the filter system was changed to a Nexus unit.
The details shown above were taken when the pond was built, and
it is intended to have a new page here shortly. |
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