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  1. #1
    Thailand Expat
    Kurgen's Avatar
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    Anyone dug a concrete fish pond?

    I'm thinking of digging a fish pond in the back garden, probably about 3m x 2m, has anyone got any tips on sunlight, depth, finishing, fish, pumps etc?

    I remember reading a thread on ponds but they were clay lined but I'm thinking of concrete.

    Cheers

  2. #2
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    WTF you want a mosquito breeding ground in your back garden for???

  3. #3
    Thailand Expat superman's Avatar
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    Guy near where I live did one for his garden and regretted it. He couldn't stop the water greening up.

  4. #4
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    hi, I've 2 about that size or bigger.
    I dug deep as to give fish somewhere to retreat.
    layed a concrete base then built with those orange blocks.
    rendered the inside n out using a pva additive then I tiled the inside and out ( Its easier to clean ). a year later.
    never had a leak .

    in direct sunlight is not the best idear.
    pumps are cheap(400bt) mine are still going good 4 years later , just change the impeller .
    filters u can design and build for next to nothing.
    will not put up wiv the "Nanny state" so don't push it on me.

  5. #5
    Thailand Expat
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    as for the green alge. a good filter set up will keep ur water crystal clear . salt or an anti green chemical( 149bt) does the trick.

    its hard work at first but worth it.

  6. #6
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    as for mosquito . they can't breed in water that has fish as the fish eat the eggs.

  7. #7
    Excitable Boy
    FailSafe's Avatar
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    I have a koi pond around the size of the one you're thinking of building- the guy who put it in built the filter pictured below (which I keep covered except when it's being cleaned every six weeks or so- the pic is from the early stages- it's filled with various materials for filtration)- there's also a drain-pipe built in so it's easy to recycle the water- I have never had any problems with clarity or algae:

    There he goes. One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.
    HST

  8. #8
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    I recently built an 8 foot by 20 foot one meter deep pond using cement with iron in the floor and filled cement block walls. Then the pond was rendered. Water proof additive was added to all cement. Filled it with water August 2011 and have no leaks yet. For added protection you could paint it with Lanko 222. Safe for fish and no leaks. Green water ponds are great for catfish and Tilapia as they eat the algae and prefer it to food. Saves a lot on the feed bill and makes for healthy fish. If you want fish for viewing, like Koi, then you want clear water. Add a Bio-filter or make a natural bog garden to use as a filter. The black 50 percent sunscreen works great for sitting out by the pool or growing veggies. I have two gravel bog gardens, one at each end of my Koi pond, the water is as clear as bottled drinking water. The Koi pond is only 80 cms deep - so we can always view the fish - my wife's babbies.LOL.

  9. #9
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    This is what i use to cover my pond and prevent the sun's rays from producing algae


    I'll try to post some more pics of my pond later
    Last edited by Mr Lick; 06-03-2012 at 04:20 PM.

  10. #10
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    Quote Originally Posted by Ceburat1
    I have two gravel bog gardens
    What's that then?

    I suppose by bricking up the sides i wouldnt have to dig it so deep, maybe a 50/50 split above and below ground level. Any problems with this?

  11. #11
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    The filter system to be effective, i was informed, had to be around 33% the size of the pond and our system is hidden away below the bridge.

    Failsafe recommends that a drainage pipe is fitted and i would agree as this makes cleaning the pond/flltration system is so much easier.

    As you can see we opted for a tiled surface, which makes cleaning a piece of cake although i believe Koi carp do prefer a concrete surface. We do have catfish lurking in order to clean rocks/stones.

    A pump is constantly pushing air into the pond water and we also have another pump operating a fountain during daylight hours. Our electric bill is around the 1500 baht mark per month.

    The pond was built more than 7 years ago and we still have some of the original Koi from then. The wooden decking has since been replaced with concrete planks which you can just see in the last photo, they were ordered through a local DIY store. This has reduced the maintenance to virtually zero.

    Great to sit out there with a book and a beer, especially Playboy!

  12. #12
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    Mr Lick, I can't see any of your pics.

  13. #13
    Excitable Boy
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    ^

    They were there before (I saw them) but they're gone now.

  14. #14
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    pics still there.. nice size koi. did u grow them in that pond or import them in?

    failsafe pls if u can describe ur filter inlet and outlet plus configuration set up plz.

    Mr lick ..not to sure u need a 33% capacity filter but Im interested in other peoples experience

  15. #15
    Excitable Boy
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    Quote Originally Posted by adzt1
    failsafe pls if u can describe ur filter inlet and outlet plus configuration set up plz.
    I really don't know much about it- apparently the dividers separate the different filtration components (the usual cotton stuff in one section, small stones in another, etc)- the pump runs something like ten minutes on/twenty minutes off to circulate and aerate the water- the outlet is a pvc pipe that runs underground to my drainage area, so it's no hassle to dump most of the water and replace it (it was put in when the house was built so it was no big to dig the ditch for it- I wouldn't want to put it in today as it would screw up the garden).

    I wasn't sure I wanted it at first as it's fairly large (1.5m x 0.8m) but I have never had a water problem since day one, and I've had the same koi for over four years.

  16. #16
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    Quote Originally Posted by adzt1
    nice size koi. did u grow them in that pond or import them in?
    The guy who organised/built my pond owned a garden centre and when i mentioned that he had some nice Koi on display he donated 7 fully grown ones when the build was completed. One or 2 have passed away during the past 7 years although they have been replaced with younger Koi that cost around 75 baht from a local shop.

    I recall that we needed to replace the fountain pump after 7 years use in February at a cost of 1500 baht.

    Our filter system consists of 3 chambers, 1 of which has stones and around 4 bags of 'activated charcoal' which removes ammonia and other organic waste. The other chambers are used as a submersible pump housing and for ease of drainage (external pipe linkage). I was also dismissive of the 33% relative filter size so plumped for 25% which has caused no problem.
    There are far superior/modern pond filters on the market today which would take up a fraction of the size of a moderate pond.

    Lots of info relating to 'Pond Life' can be googled depending on what fish you will be keeping. Try - www.lagunakoi.com

    It would be nice if you could post a build progress of your pond later once you get started Kurgen.
    Last edited by Mr Lick; 06-03-2012 at 10:26 PM.

  17. #17
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    Krugen I have a thread on Teakdor "Cement Pond Wall Strength". I was seeking information and got some very good advise on that thread. Starting at post 17 there is photos of my ponds and future ponds - I got da bug. Post 20 is a photos of my 8 foot by 20 foot by 90cm pond.

    Tomorrow I will try to take a photo of the bog gardens and Koi pond. I have cut back most of the plants and have drained, am draining, part of the pond for repair. I have a small wall separating the pond into two sections. It is about 18 inches high so my fish are safe in one side while I repair the other. When I built this pond I knew nothing about ponds or bog gardens - reason I have a small leak now. Photos in the ponds condition now will show more detail then when full and a jungle all around.

    The bog garden is just a section of the pond that is only 30 cm deep, filled with pea gravel and planted with water loving plants. The fish pond water is pumped into the bottom of this bed using 3/4 inch pvc. A 2.5 dia. pipe runs through the bed, under the gravel. I drilled holes every 4 inches along the length of the pipe at a 45 degree angle to the bottom of the bed. The water is forced through these holes and rises up through the gravel. The fish poo feeds the plants and the water overflows the edge of this bog garden area back into the pond. The water returns to the pond clear and clean.

    I just had a thought. Not often I have one of those, but, within the month I will be removing most of the gravel from one of the beds and at that time I can take photos of the whole thing. Easier to understand that way.

    If you are anywhere near Korat or visit the area some time you would be welcome to come see for yourself.

  18. #18
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    Well, would you believe it - I unloaded photos once before and have completely forgot how to do it. Maybe I am brain dead. Anyhow until someone explains it to me I cannot post any more photos. I just re-read the instructions but it is all lost on me.

  19. #19
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    pray for help?

    or go to the newbies section and read the tutorial

  20. #20
    FarangRed
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    I've got 2 big fish ponds with different set ups try various things to see what suits you.

    My favorite fish are the Arowana's
    http://teakdoor.com/farming-and-gard...-aquarium.html (The Asian Arowana - King of the Aquarium)

  21. #21
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    Kurgen.&nbsp; I got some photos uploaded tonight to the gallery. Got a headache reading and re-reading and playing with TDs non-user friendly system with photos.&nbsp; Now I can not figure out how to post the photo to the thread. Sorry man, you get no photos because I give up. This system is crazy.&nbsp; I really don't think DD wants members to post photos or he would use a different system.<br>

  22. #22
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    concrete fish will be crap to watch!

  23. #23
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    Quote Originally Posted by Ceburat1 View Post
    Kurgen.&nbsp; I got some photos uploaded tonight to the gallery. Got a headache reading and re-reading and playing with TDs non-user friendly system with photos.&nbsp; Now I can not figure out how to post the photo to the thread. Sorry man, you get no photos because I give up. This system is crazy.&nbsp; I really don't think DD wants members to post photos or he would use a different system.<br>
    My one attempt at uploading pics was about 2 years ago and I've never been sober since, DD has ruined my life.

  24. #24
    FarangRed
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  25. #25
    FarangRed
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