wolf888
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Oct 20, 2006, 4:46 AM
Post #4 of 9
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Re: [amozh] Newbie - Koi Pond Construction
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Hi Budi,
I upload your construction design inline so we can discuss together about your future pond.
First of all, the size of your pond (exclude filter section) is 4m x 2,5m x 1,4m which means that you have a 14 ton pond. I would suggest 1,75m depth to get more water volume. If you make it 1,75m, then the pond will be 17,5 ton. Logically, more water, you can put more kois.
As mention by Andymadd on pond construction section, it's better to use only single bottom drain to the size of your pond. The reason was given overthere nicely. At the other hand, a single bottom drain will have greater suction than if you give it 2 BD. But for 1 BD, I would suggest you to use 6" or 8" pipe instead of 4". For the pond wall, it's better to put bricks first all along the wall and base of the pond before the wall itself. The bricks will be usefull to prevent the crack of your pond because of earth moving and to reduce tension of the construction.
For the skimmer, I would suggest you to put about 2 point of skimmer to wash out effectively oil and other debris on the water surface.
Now flash discussion on your filtering section. I would suggest you make 2 vortex chamber to ensure big debris would get down perfectly. And I would suggest just make the flow in one line instead of zig zag flow. So, the the flow will be 1,4,5,6,3,2. I will put mat first before K1. If you use K1, you should make the filter chamber in round shape so the K1 would circle nicely. The air flexi should be placed stick on the centre with flow pipe. I would suggest you to use more K1 cause 50 litre of K1 been said could handle about 500gr of koi food.
For the skimmer, I guess you could connect it to your vortex chamber, so you could wipe out dedicated pump for the skimmer. Water from the skimmer will be flow cause gravity and surface difference. For deep water return and ventury, I would suggest you to use dedicated pump if you are willing to use them continously. Please read more about using deep water return for a long term, because there are pro contra about this method.
For the pump, you could use Tsurumi which has been well known to koi hobbyist. Myself use Lowara pump which I think has less power but bigger pumping power than Tsurumi. I'm using 2 unit Lowara type DOMO-10 for my 56 ton pond. The pump could be bought at fish stores or at Glodok area. Be aware to seek anti corotion material for the pump as the water would be a bit salty (you would sometime need salt for your water treatment). The ideal pump should could move your pond water to 1 - 2 hour / cycle, so just calculate your pond capacity with the pump specification. For UV, you could either use the compact one or DIY with UV lamp placed on your filter chamber.
That's all for now. Good-luck and welcome to the kois world ;)
Cheers,
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I know the owner of Aussiekoi and I got my BD from him also but I only bought the standard 4" BD then I bought the air diffuser. It cost me less than $200AUSD. 