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My backyard koi pond

Discussion in 'Water Features' started by Victor, Nov 28, 2003.

  1. Victor

    Victor LawnSite Bronze Member
    Messages: 1,430

    Hello guys. I've been on lawn site for awhile now, but never spent much time in the pond forum. When I took a look in here today, and saw all of the really nice ponds you guys have on display here. I figured I'd send a couple of pics of the koi pond I built in my backyard.

    It's 16 feet long, and 8 feet wide, with a depth at the bottom drains of six foot six inches. The twin bottom drains feed a vortex style filter through four inch plumbing. After the water has been through the four chambers of the vortex, it is gravity fed to a 3600 GPH Sequence pump. From there, it is pumped through an ultra-violet sterilizer. After leaving the sterilizer, the water goes through two-inch plumbing, and is split off to the "skippy filter" you see above the waterfall pool. The other portion of the water is directed to one of the four venturi jets I have sticking out of the pond wall, one and a half feet below water level.

    The water on the surface goes through the two surface skimmers, and is routed to a sump-box that I keep a large bag of activated carbon in. The water is gravity fed to another Sequence pump, that I have dialed to 5000 GPH. Part of this water is then sent to the "skippy filter above the waterfall pool, and the other portion of the water is sent to the three venturi jets a foot, and a half below the water's surface.

    The pond can automatically top itself off, as evaporation takes place, but I normally leave the valve for that closed, and just top off the pond after doing maintenance, and the consequent water change.

    If a leak should happen to develop while I'm away. I don't have to worry about the pumps pumping the pond dry, because I installed a float switch in the sump that the surface skimmers feed. As soon as the water level in the sump drops far enough, all power to the pumps, and sterilizer is killed.

    The floor of the sterilizer vault is slightly higher than, and sloped towards the vortex vault's floor. Any spilled water on either of these floors will drain into the sump I installed in the floor of the vortex vault, and be pumped out into the flower bed.

    To take care of high water levels incurred from heavy rains, I installed an overflow in the vortex filter (it's water level, is the same as the pond's water level of course). Overflowing water is dumped into the vortex vault sump, and also pumped out into the garden.

    Next spring, I'm going to build a well around the "skippy filter", to hide it. Then I'll consider the pond complete.

    So that I don't have to drain the water level down, and shut off everything like I had to do last winter. I built a greenhouse over it last week. To monitor temps inside the greenhouse, I bought a temperature sensor, that I put inside the greenhouse, and I also bought a temp sensor that I put out on the deck. There is a readout/display module I bought for my bedroom wall, that tells me what the temp is inside the greenhouse, at any given time, as well as the outside temp. I programmed the monitor's alarm to go off if the temp inside the greenhouse falls below a certain temp. That way, if the greenhouse plastic gets punctured by a fallen limb, or something in the middle of the night. I'll know about it.

    Have a great day everyone! :waving:

    If I can help anyone with any questions, let me know.


    pond pic 1.jpg
  2. Victor

    Victor LawnSite Bronze Member
    Messages: 1,430

    Here's another pic
  3. Victor

    Victor LawnSite Bronze Member
    Messages: 1,430

    Here it is

    pond pic 2.jpg
  4. WeatherMan

    WeatherMan LawnSite Senior Member
    Messages: 692

    Looks nice but you need some landscape to hide the pipes
  5. WeatherMan

    WeatherMan LawnSite Senior Member
    Messages: 692

    Here's you I did in the summer:cool2:

    pond done.jpg
  6. Victor

    Victor LawnSite Bronze Member
    Messages: 1,430

    Thanks Weatherman. I mentioned in the post above that I'm going to build a well around the "skippy filter" next spring. That will hide the pipes.

  7. Team Gopher

    Team Gopher LawnSite Platinum Member
    from -
    Messages: 4,040

    Hi Victor,

    Very nice pics and great work!
  8. Victor

    Victor LawnSite Bronze Member
    Messages: 1,430

    I love looking at all of the great ponds in this forum. I wish I would have looked in here sooner! Thanks for the good words too. :)

  9. mattntamm

    mattntamm LawnSite Member
    Messages: 9


    You have one heck of a pond. Very elaborate detail. I am quite interested in one particular part, if a leak should happen while you are away. What exactly is it that you have done to prevent the water level from dropping? I would certainly appreciate any advice on this matter. I have a hole somewhere in my liner and am unable to locate it. Is there some way that I may be able to keep a continuous flow of water to my fish?
    What is this about skimmers and sump pumps? Forgive my lack of knowledge in this area. My pond and fish have done so well over the past few years. I have never had to so much as put a single chemical of any nature in there. My fish are now four years old and have been transferred from one pond to another.
    Thanks for taking the time to read my post. Once more, any help would be greatly appreciated. Enjoy your evening,

    mattntamm :(
  10. Victor

    Victor LawnSite Bronze Member
    Messages: 1,430

    Hello Matt. Thanks for the good words. My pond isn't designed to fix a leak if it happens while I'm away. I designed it so that if a leak occurs while I'm away from it, a float switch will shut all of the power to the pumps off. By power to the pumps being killed in a low water level condition my pumps won't have a chance to run dry and possibly burn up.

    If you have a leak Matt, I'd recommend putting milk in your pond where you think the leak is. You'll need to drain your pond down to the level where the leak is. It might take you a little while to find this level, but drain it down, bit by bit untill the pond level stabilizes (stops lowering by itself). Once you find the level that the leak is at, put enough water back in the pond to raise it's level just above the leak and pour little amounts of milk around the area you think your leak is at. You'll be able to see the milk swirl where th leak is on the pond wall. Good luck with everything Buddy. I hope I helped you.


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