Home | About Us | Contact Us


Koi Forum - Koi-Bito Magazine straight from Japan
Page 1 of 2 12 LastLast
Results 1 to 10 of 20

Thread: Unchilling the waterfall

  1. #1
    Oyagoi dizzyfish's Avatar
    Join Date
    Mar 2006
    Location
    Kentucky
    Posts
    1,448

    Unchilling the waterfall

    I've been concerned since Dick and others have mentioned the chilling effect of a waterfall. So anyway I needed to leave everything running to protect my plumbing pipes and stream bed from freezing. I hope this does the trick.
    Mitch
    Attached Thumbnails Attached Thumbnails Unchilling the waterfall-224_2437.jpg  

  2. #2
    Daihonmei PapaBear's Avatar
    Join Date
    Oct 2005
    Location
    Davenport, Oklahoma
    Posts
    6,726
    We did much the same (coupled with a stock tank heater in the filter) with good results. Went through a good ice storm with temperature in the low teens for the better part of a full week with zero ice formation anywhere on the pond.

  3. #3
    Sansai
    Join Date
    Dec 2003
    Location
    Redding, California, USA
    Posts
    172
    What a simple solution to the problem of "supercooling" water as it tumbles down a waterfall. Especially for those of us in more temperate winter climates. With a good air pump and diffusers or air stones not much worry about keeping the water oxygen levels up. I realize that this will not work for everyone, but for sure it will for me. Also means I can keep the bio filter material in the waterfall sump in contact with fresh water much easier than by creating some Rube Goldberg contraption to take water out of the sump and put it into the pond with out subjecting it to cold air temps. Thank you for taking the time to show us what you came up with simply.

    Did you consider some sort of a frame work to keep the tarp from collapsing? Does anyone think that would be necessary. How about those who live in areas of hard winters with temperatures that cause your ponds to ice over for the winter?

    Steve

  4. #4
    Oyagoi dizzyfish's Avatar
    Join Date
    Mar 2006
    Location
    Kentucky
    Posts
    1,448
    Steve,
    I think a frame would be ideal, but unless it comes a big rain or snow I think the water will run under this just fine. If it got a lot of water on top it might force some of the water running below the tarp out of the stream bed. Rain or snow it shouldn't be too big a deal to get out there and shake it off and start over.
    Mitch

  5. #5
    Sansai
    Join Date
    Dec 2003
    Location
    Redding, California, USA
    Posts
    172
    That was kinda along the lines I was thinking. It was more of a thought and frames can bring their own set of problems. Each cross piece would create a "dam" and collection point so I guess if I were to use some sort of a frame the pieces would just run down the slope and not across it. Either way the idea seems like a great and simple solution to a concern about winter cooling effects on a moving and splashing body of water.

    Steve

  6. #6
    Honmei
    Join Date
    Sep 2005
    Location
    Martinez,CA
    Posts
    4,611
    How about building a greenhouse over the whole pond and waterfall.

  7. #7
    Jumbo B.Scott's Avatar
    Join Date
    Apr 2004
    Location
    Holland
    Posts
    837
    I think the problem with cooling in the winter needs to take into account the fact that things like waterfalls and TTs vastly increase the surface area and facilitate heat transfer. The trouble with a water fall is simply that in creates a larger area to lose pond heat. This is true even when it is not freezing.

    B.Scott

  8. #8
    MCA
    MCA is offline
    Honmei MCA's Avatar
    Join Date
    Dec 2003
    Location
    Atlanta
    Posts
    2,574
    why not just bypass the waterfall when it is cold? Put a 3 way Jandy valve or some ball valves and uniions that let you send water to:
    waterfall only
    waterfall plus bypass
    bypass only

    When winter starts, use only the bypass and drain the water from the waterfall circuit by opening a pipe union (or valve).

    Our bypass is ~6" below pond's normal pool level. It is located just below waterfall.


    BTW....nice looking pond!

  9. #9
    Oyagoi dizzyfish's Avatar
    Join Date
    Mar 2006
    Location
    Kentucky
    Posts
    1,448
    Quote Originally Posted by MCA View Post
    why not just bypass the waterfall when it is cold? Put a 3 way Jandy valve or some ball valves and uniions that let you send water to:
    waterfall only
    waterfall plus bypass
    bypass only

    When winter starts, use only the bypass and drain the water from the waterfall circuit by opening a pipe union (or valve).

    Our bypass is ~6" below pond's normal pool level. It is located just below waterfall.
    The biggest problem I have is that my plumbing was not done in a way that allows for easy draining of the pipes. It is certainly an option I might consider redoing, but I generally enjoy the waterfall even in the cooler months, if it doesn't get real cold. Also a lot of robins and other birds and wildlife drink from the waterfall. And in order to protect the liner and to shape the pattern of the falls I poured concrete on top of the liner. I sealed the concrete, but wouldn't be surprised if water seeps down through the concrete to the liner in places. The way I built it even if the concrete sealer fails the water is still contained by the liner below. (It doesn't leak) However I have five levels of falls and about a 25' length of streambeds from the beginning of the falls until it empties into the pond. When the water is shut off a series of shallow pools remain above the individual falls. I'm concerned that if those pools freeze, and the concrete below freezes it might crack. So anyway I have no desire to re-poor the concrete in the stream beds every year. So for me covering it and leaving it running seems like a decent option. And if cools a tiny bit by keeping a very small section open for the wildlife to drink, it's a price I'm willing to pay.
    Mitch

  10. #10
    Tategoi moikoi's Avatar
    Join Date
    Nov 2006
    Location
    Sacto,Ca
    Posts
    485
    Quote Originally Posted by B.Scott View Post
    I think the problem with cooling in the winter needs to take into account the fact that things like waterfalls and TTs vastly increase the surface area and facilitate heat transfer. The trouble with a water fall is simply that in creates a larger area to lose pond heat. This is true even when it is not freezing.

    B.Scott
    what if the outside temp is warmer than the pond temp? wouldn't the waterfall help warm up the pond temp.

Page 1 of 2 12 LastLast

Similar Threads

  1. Has anyone built a waterfall/weir?
    By kntry in forum Main Forum
    Replies: 6
    Last Post: 06-11-2012, 08:08 AM
  2. koi pond and waterfall
    By dinh in forum Main Forum
    Replies: 29
    Last Post: 03-18-2012, 09:14 PM
  3. When to turn waterfall / stream off?
    By quicksilver in forum Main Forum
    Replies: 5
    Last Post: 09-20-2010, 01:35 PM
  4. waterfall filter
    By Minster49 in forum Pond Construction
    Replies: 4
    Last Post: 07-18-2006, 03:44 AM
  5. Waterfall Ideas??
    By drussell in forum Main Forum
    Replies: 21
    Last Post: 01-03-2006, 11:43 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Articles - Sitemap - FAQs and Rules

KB Footer Graphic
Straight from Japan... For the serious hobbyist!
All content and images copyright of: Koi-bito.com