KevKoi
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Jun 4, 2002, 11:05 PM
Post #2 of 9
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Well, someone asked, so I'll pull it up again....  . This is my outdoor pond. It is an L shaped formal pond, Approx 50 000L. Runs on a filter about 40% surface area. There are basically 5 chambers in the filter.1. Dry sump where all the chambers and the bottom drain of pond flush into with an automatic pump (6ft deep), 2. Settlement chamber (6ft deep), 3. mechanical chamber consisting of brushes (4ft deep at deepest.). There is the Izeki net after the brushes just b4 the bio chamber.) 4. Bio Chamber consisting of bails of Jap matting (approx 3.5ft deep). Pump chamber consisting of 2 Tsurumi Pumps (3.5ft deep). Right before the pumps there is a UV light box mounted under the decking. All chambers are aerated with a Hiblow.
From the pump sump, the water is diverted to 2 venturis, 2 Trickle Towers, 3 bottom pushes (at the bottom of the pond) and 2 vege filters. All these lines of diversion from the pump have ball valves attached to them so I can cut off the filter from the main pond should the need to medicate the entire pond without affecting the filter bugs arise.
Oh, and the TT's fill about 3000 bioballs.
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.... i was designed a square pond about 20ft x 8ft x 4.5ft including 4 chamber filter as the side (without bottom drain), but end up only left 16ft x 5.5 ~6 ft x 3.5ft
including 4 chamber (L shaped filter).... 
, becoz most of his friends like to see the fish when they visit my house, and they told him that if can make it bigger will be great.... but i can do anything now... at least i have a pond for my koi now.... no longer need to keep them in few different small tank anymore 