Pond Depth - 3 feet, 4 feet, 5 feet - What would you choose?
  • pepperpepper May 2014
    Posts: 53
    My proposed pond depth is currently 1m or about 3 feet.

    Someone suggested deeper is better.

    I am considering increasing the depth to 1.2m or 1.3m or 4 feet. I think that this should not be a problem. The maximum I can go is probably 1.5m or 5 feet.

    However, I am wondering how far I can push the depth (max 1.5m) and what are the benefits? I cannot find any scientific information on the web that relates to the depth.

    What I gather is that deeper Pond = bigger Koi

    But for me, too deep =
    - more start up & running costs, eg pumps required, more electricity consumption
    - cannot see the koi if they are at the bottom
    - safety issue if some kids accidentally fall in

    Any comments?

  • MfwleeMfwlee May 2014
    Posts: 355
    Unless you fill to the top, we need to be sure whether we refer to water depth or to pond depth.
    Mine pond is 5 1/2 feet and I get about 5 feet of water depth. Personally, I think that 3 feet is a bit shallow, and 4 - 5 feet of water would be ok for a small pond of about 2000 - 2500 imp gallons.
    Bigger Koi ? ... you will need a bigger pond than mine.
    Mine is gravity fed, and the water pump is in the filter, so my electricity bill will depend on my turnover rate which is in turn determined by my selection of pump.
    Seeing my koi ? ... With my set up, which includes a WaterCo, I can see every stone on the bottom, and my koi are also quite friendly because of the small size of the pond, as well as their having spent 4 - 6 months in a F/G quarantine tank. They come to the surface and sometimes even splash me when I appear late with their feed.
    My pond is raised 2 feet above ground and 3 1/2 feet underneath. Yes, kids can hurt themselves, but they will have to try quite hard. :-D
    Mike Lee
  • MfwleeMfwlee May 2014
    Posts: 355
    Nearly forgot - you will be putting quite a few tons of weight on the ground. Even though this would be alright in an open area, do remember to check if you are going to locate your pond anywhere near the house.

    As for the effect of depth on your koi, I do not have any scientific evidence beyond my belief that the different water pressure, as well as the provision of some security / refuge may have a positive effect on your fish.
    Mike Lee
  • pepperpepper May 2014
    Posts: 53
    Hi Mike,

    Thanks for your reply.

    Is this the Waterco Filter that you have?


    I presume that's your pond in your profile Pic. I like the raised up portion, where you can sit or lean over to feed the fish. Tried to lobby for that, but my other half said no.

    My pond will look hopefully something like the attached - I think..

    So the chance of falling in is there.

    After thinking about it will try for 1.3m, slightly over 4 feet and ask the Architect and Civil Engineer if this can be done.


  • pandaipandai May 2014
    Posts: 1,083
    I chose the depth so that when I need to go into the pond to do maintenance work, I can just stand instead of having to swim. It will be much more convenient.
    Get Kenkona Koi and Kenkona Bio at special price online at http://kenkonakoi.blogspot.com/
    Post edited by pandai at 2014-05-25 10:37:53 am
  • pepperpepper May 2014
    Posts: 53
    Haha Pandai..

    Good point. Thanks

    Went to see a Koi Farm the other day. The Kois were humongous. The Pond they were in was so deep, I could not see the bottom, it was scary.
  • MfwleeMfwlee May 2014
    Posts: 355
    Our " other half " all seem to be the same. My first pond was a result of this, and also because the architect friend wanted to " produce a rustic appearance ".

    My dogs went in for a swim every few days, monitor lizards and frogs also had a great time, frog eggs everywhere, and I nearly drowned when I got home after ( those days ) Happy Hours ! The wind also brought in all kinds of debris, and you will need a skimmer if you want to preserve the water. Yes, my profile shows my second attempt after I learned my lesson with regards to basic koi keeping.

    Yes, I use the WaterCo in addition to a gravity fed system consisting of 2 Vortex and a settlement chamber.

    My children were young then, and having their friends over was quire common. All it took was for me to say that I was very worried if my dogs accidentally pushed some of them into the pond - ZAAAAP !!! - raised pond :-)) :-)) :-))
    Mike Lee
  • ShukriShukri May 2014
    Posts: 4,881
    My pond is about 6 feet deep, and the results prove itself....
    Deep ponds need to be treated like a swimming pool.... need
    security measures.
    In Koianswers Forum, no one individual is above the rest. This is the Forum for the Koi Community.
  • YipmYipm May 2014
    Posts: 194
    Go to 4-5 feet you will never regret and it covers all angles of koi keeping
  • ikankoikauikankoikau May 2014
    Posts: 1,053
    Agreed. 4 to 5 feet will be the best imho. Adult should be able to stand above the surface in case of anything bad happened.

    On Koi matters, beyond 5 feet might encourage in-aerobic condition when the pond doesn't have good aeration. Therefore, bad bacteria might overcome the good bacteria with slight set back. DEEP pond makes hobbyist difficult to net the fish.

    However shallow pond(less than 3ft) will freak and frighten the kois easily. Daily temp variation for an open or partly open pond will be bigger compare to deeper pond.

    Imho, 4 to 5 feet is ideal enough.
  • pepperpepper May 2014
    Posts: 53
    Thank you all for your comments.

    I am now asking the Architect and the Engineer if increasing the depth of the pond to 1.3m (4 feet) or 1.5m (5 feet) is possible.
  • MfwleeMfwlee May 2014
    Posts: 355
    Remember that if you want a gravity fed filter system*, you will also need to recess the filters into the ground. In the case of your pond design, this could be quite complicated because you will need a whole bunch of underground pipes.

    * where all other variables are the same, a gravity fed system will likely give you the best water clarity. Not mandatory however - you can compensate in many ways if you decide on the conventional pump fed system.

    All the best, I am going to try my best this morning to return my sparkling new TV which I specifically bought to watch Malaysia win the Thomas Cup. :-D :-D :-D

    Joking lah. Still proud of the team.
    Mike Lee
  • andysiaandysia May 2014
    Posts: 56
    Just to contribute my two cents on the raised up pond wall. When I started this hobby 4 yrs ago, my koi pond was constructed that it was flat on the ground (no pond wall) for aesthetic reason. Later on I ran into a few problems: (i) dirt (dust, dried leaves, etc.) always ended up on the surface of the pond when there was a gust (ii) fish appeared to be scared (bcos human appeared very big when approaching the pond) (iii) netting koi was a bigger challenge (no support from pond wall). I reconstructed my koi 2 yrs ago by raising up pond wall by 1.5ft. All the problems solved. Now I can even sit on the raised up portion to enjoy viewing my koi.

    On your HM's objection, try harder and I believe there's way to convince her ... ask koi kichis in this forum and they will tell you how :-D
  • idrisidris May 2014
    Posts: 1,182
    a diamond ring will do the trick...hehe
  • BillBill May 2014
    Posts: 55
    Diamond ring mana cukup??? X_X
    If HM ask for DVVS1, aiyohhh...... sure bankrupt. ~X(
  • ShukriShukri May 2014
    Posts: 4,881
    A diamond ring will do the trick........... trust me!!!
    Or a Lui vuitton hand bag......... or something that
    she wants a lot!!! A baby perhaps........ :-D
    In Koianswers Forum, no one individual is above the rest. This is the Forum for the Koi Community.
    Post edited by Shukri at 2014-05-27 01:50:46 pm
  • gerrygerry May 2014
    Posts: 777
    :-)) A baby??? :-))
  • BillBill May 2014
    Posts: 55
    Shukri sifu,
    First two items ok lah ... poket masih boleh tahan.
    But last item, baby??? ... woh .... lifetime investment :O :-t
  • ChengAunChengAun May 2014
    Posts: 925
    There was once a time where deep ponds were thought to be a factor towards causing sinking disease. How true this is I'm not sure, but IMHO not too deep, about 4 - 5feet is good I think, both for the koi's and for our own maintenance ease. :-D
    Be updated in the world of koi. Jangankan seperti "Koi di bawah bottom drain"
  • pepperpepper May 2014
    Posts: 53
    Raised up pond wall confirmed not going to happen. Perhaps during another renovation in the future, but definitely not this round.

    On the bright side the main contractor has agreed to deepen the pond to 1.5m or 5 feet for a small fee which is no way close to a diamond ring, LV handbag or a baby. Btw HM is fairly interested in the Koi pond as well.

    Architect has said ok. Now just waiting for the Engineer to approve.

    Thank you everyone for your thoughts and advice.
  • BthineshkumarBthineshkumar May 2014
    Posts: 1,763
    I believe not late to chip in.

    IMHO, hobbyist pond depth best to be build between 4 feet to max 5.5 feet. Reason, unlike koi dealers who separate tosai for shallow pond and jumbo's in deeper pond of above 6 feet, we hobbyist mix all range of kois from tosai till whatever 'sai' in one pond. I heard cases whereby tosai which kept in deep pond tend to get sinking disease (imagine the pressure at that depth). And on top of that all the security measure Capt highlighted earlier.

    I had put grill's surrounding my 5feet depth pond to safe guard my kids, and the visitors. I still able to go in the pond with full water to check things out if anything goes wrong. :)
  • smokersmoker June 2014
    Posts: 715
    Averagely 5 feet / 1.5m will be ideal i believe.
  • TomyCTomyC June 2014
    Posts: 103
  • pepperpepper July 2014
    Posts: 53
    In the end, based on everyone's comments, mainly for safety and maintenance, I have opted to go with a depth of 1.3m.

    Thanks to everyone for your help.
  • redcaptrioredcaptrio February 2015
    Posts: 8
    According to Mike Snaden in this interview in "Growing Jumbo Koi", 1.5m is max. regarding pond depth.

    "Ecce quam videri"

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Sign In Apply for Membership