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  • Page 3 of 3 FirstFirst 123
    Results 41 to 44 of 44

    Thread: Another Pond! ... going with liner!

    1. #41
      icu2's Avatar
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      Quote Originally Posted by schreiberkoi View Post
      Thank you! Any thoughts on this plan?
      It's pretty much the same design I did in post #16 so I'd still go with that if more BD's and filtration isn't
      doable. I would still not do a BD to pump type design, but save up for at least one Ultra III sieve. I really think
      a mechanical filter before the pumps is a must. But at the very least, if trying to do a BD > pump > s/g filter
      design, add a drain on the bottom of each of the s/g filters to be able to release larger debris that gets trapped under
      the s/g filter grates. I'd also go ahead and dig a filtration pit now so you could add filters and have them be at pond
      level so the BD and skimmer plumbing could gravity feed them if you wanted (needed) to in the future.

      I think there is a temptation to either split the return of a s/g filter to feed more than one thing or combine the output
      of 2 s/g filters to save on plumbing as opposed to just running one return per filter to wherever the desired output will
      be. I've seen a lot of s/g filters returns that don't work as anticipated because combining and/or splitting them up. I'd
      just keep a constant "one filter, one return" type design. I think your design does this but thought I'd toss it out there
      because sometimes people see multiple lines in one place and think, "why don't I just use a larger pipe and carry all
      the water in one?", and sometimes it complicates things even more.

      Will the island get some type of support around it? I've never done anything like it but all the other designs like this
      that I've seen has the island surrounded with some type of support that I presume is to keep it from collapsing into
      the pond, much like a collar does around the pond perimeter. Do you plan to do something similarly?

      I'm not sure who the young person is in the earlier picture standing on the island, but she gives scale to the size of
      the project and it's a huge undertaking!
      --Steve
      ..WWKC Treasurer


    2. #42
      schreiberkoi's Avatar
      schreiberkoi is offline Senior Member
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      Quote Originally Posted by icu2 View Post
      It's pretty much the same design I did in post #16 so I'd still go with that if more BD's and filtration isn't
      doable. I would still not do a BD to pump type design, but save up for at least one Ultra III sieve. I really think
      a mechanical filter before the pumps is a must. But at the very least, if trying to do a BD > pump > s/g filter
      design, add a drain on the bottom of each of the s/g filters to be able to release larger debris that gets trapped under
      the s/g filter grates. I'd also go ahead and dig a filtration pit now so you could add filters and have them be at pond
      level so the BD and skimmer plumbing could gravity feed them if you wanted (needed) to in the future.

      I think there is a temptation to either split the return of a s/g filter to feed more than one thing or combine the output
      of 2 s/g filters to save on plumbing as opposed to just running one return per filter to wherever the desired output will
      be. I've seen a lot of s/g filters returns that don't work as anticipated because combining and/or splitting them up. I'd
      just keep a constant "one filter, one return" type design. I think your design does this but thought I'd toss it out there
      because sometimes people see multiple lines in one place and think, "why don't I just use a larger pipe and carry all
      the water in one?", and sometimes it complicates things even more.

      Will the island get some type of support around it? I've never done anything like it but all the other designs like this
      that I've seen has the island surrounded with some type of support that I presume is to keep it from collapsing into
      the pond, much like a collar does around the pond perimeter. Do you plan to do something similarly?

      I'm not sure who the young person is in the earlier picture standing on the island, but she gives scale to the size of
      the project and it's a huge undertaking!
      Thanks for your input! One of my current ponds has the skimmer and bottom drain feeding into priming pot then pump going to S/G filters it is 4500gallons and has worked well. They do not have any clean out on the bottom though they are just the original birdman design. This pond will only have pond grade koi but I still want them to be healthy. That's why I thought the same design only with 2 sets would work as well as adding in the anoxic baskets filter area which will be about 30% of the ponds surface area. I currently have a filter pit on the 4500 gallon pond but have had multiple pumps ruined from flooding of the pit for various reasons ... sump pump quitting etc. One of the reasons for wanting to know if it could work at ground level. The island perimeter as well as the perimeter of the pond will have cinder block collar and then just the weight of the water against it to hold in place. And yes I intend on having one barrel for each line. It is my grand daughter in the picture and yes it will be a huge undertaking that's why I need all the help I can get to try not to make costly mistakes that I can not afford along the way. I don't know much about sieves other than they are quiet expensive. I see there are different kinds. I would have loved to have been able to get one of the cetus sieves that were being given away in Colorado but assume they are gone I have not gotten a response back. What would be the difference in the Sieves? Is it the volume of water they can handle or the way they are plumbed?

    3. #43
      icu2's Avatar
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      Yes, the different sieves are volume they can handle and the inputs into them. The Cetus can handle about 4700 gph
      and has 1 - 4" input at about $1300 new and the AquaForte Ultra III has 2 - 4" inputs with a cap of about 8000 gph at
      $2000 new. Imo expensive for sure, but worth the cost.
      I know, easy for me to say.
      --Steve
      ..WWKC Treasurer


    4. #44
      schreiberkoi's Avatar
      schreiberkoi is offline Senior Member
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      Quote Originally Posted by icu2 View Post
      Yes, the different sieves are volume they can handle and the inputs into them. The Cetus can handle about 4700 gph
      and has 1 - 4" input at about $1300 new and the AquaForte Ultra III has 2 - 4" inputs with a cap of about 8000 gph at
      $2000 new. Imo expensive for sure, but worth the cost.
      I know, easy for me to say.
      I am seriously considering trying to get the AquaForte Sieve. Do these have to be in a filter pit or can they be ground level? Also suggestions on vendors? I am also looking at going ahead and buying the koi toilet II bottom drain. The one I currently have in my 4500 gallon pond has the dome. I see they have either with dome or a screen. I am thinking of getting the one with the screen due to the fact I have had smaller koi sucked up into the drain. Does anyone have any ideas or thoughts on this? Wondering if the cleaning and sucking up of waste with be diminished with the screen one vs the dome.
      Last edited by schreiberkoi; 11-29-2021 at 03:37 PM.

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