Page 1 of 2 12 LastLast
Results 1 to 20 of 32

Thread: Need help Engineering Bio Filter

  1. #1
    reefcartel's Avatar
    reefcartel is offline
    reefcartel
    has not specified a status.
    Member
    Join Date
    Nov 2014
    Posts
    51

    Need help Engineering Bio Filter

    Hello Friendly people of Koiphen. I really need your help building a Bio/Mechanical filter for my Koi pond. Digging up 13' ft length x 10' ft wide and a depth of 4 feet (Roughly 4000 gallons). I am currently on a budget right now so will need your expertise in a cost effective yet quality filtration system. Ive been researching and reading through the threads but I still have no idea how to start. I would need steps and possible a list of supplies. Also would need some advice on how to create the bottom drain. I am very new to this and I do not have much plumbing experience.

    Also, wondering if this DIY filtration system should be sufficient enough to keep the water clear and fish healthy. Or would i need to supplement with a mechanical filter or bead filter as well.

    Another thing I am also concerned about is hiding the filter inside a housing unit. I was possibly thinking of building a small shed to box in the filter.

    Here are some examples of what ive seen.



    Is this pump good to circulate enough gallons through the filter?



    Here is my Pond so far. there is an old skimmer box already installed that i can refurbish and also an output filter for the waterfall. The old Liner and underlayment is damaged and i had to remove it since i am digging a couple feet deeper







    Sent from my iPhone using Tapatalk

  2. #2
    Goki56's Avatar
    Goki56 is online now
    Goki56
    has not specified a status.
    Moderator ~ WWKC BOD ~ WWKC President
    Join Date
    Jan 2010
    Location
    Franklin Park IL
    Posts
    8,755
    I moved your thread to the Construction Forum to generate some more responses.
    Gordana





  3. #3
    Jojoartie's Avatar
    Jojoartie is offline
    Jojoartie
    has not specified a status.
    Senior Member
    Join Date
    Sep 2014
    Location
    LI, NY
    Posts
    956
    Ok, so tell us a little bit more about your pond. What is the climate? Three season? Freezing temps? This will help with filtration decisions. Also, do you plan on leaving any part of your existing system? If so, what? Are you willing to build some of yourr filtration or not really? This will help.

  4. #4
    reefcartel's Avatar
    reefcartel is offline
    reefcartel
    has not specified a status.
    Member
    Join Date
    Nov 2014
    Posts
    51
    Quote Originally Posted by Jojoartie View Post
    Ok, so tell us a little bit more about your pond. What is the climate? Three season? Freezing temps? This will help with filtration decisions. Also, do you plan on leaving any part of your existing system? If so, what? Are you willing to build some of yourr filtration or not really? This will help.
    So I live in the East Bay Area. The Climate is pretty stable. During the coldest Winter and fall it ranges from 45-65 Degrees. During Spring and summer 70 - 84 Degrees.

    In regards to the existing system. I wanted to take them out and re-pipe everything. Include a bottom drain and just put new pipes.

    Yes i am willing to build my own cost effective filter.


    Sent from my iPhone using Tapatalk

  5. #5
    MCAsan's Avatar
    MCAsan is offline
    MCAsan
    Koi keeping is applied science, with a touch of artistry.
    Senior Member
    Join Date
    Oct 2015
    Location
    Atlanta
    Posts
    1,017
    Use a sieve such as UltraSieve III as the mechanical stage. Then pump feed fluid bed bio reactor, a shower, or even a chamber of matting cartridges. You may need UV as part of the circuit.

  6. #6
    vipertom1970's Avatar
    vipertom1970 is online now
    vipertom1970
    has not specified a status.
    Senior Member
    Join Date
    Dec 2009
    Location
    California
    Posts
    3,138
    Quote Originally Posted by reefcartel View Post
    So I live in the East Bay Area. The Climate is pretty stable. During the coldest Winter and fall it ranges from 45-65 Degrees. During Spring and summer 70 - 84 Degrees.

    In regards to the existing system. I wanted to take them out and re-pipe everything. Include a bottom drain and just put new pipes.

    Yes i am willing to build my own cost effective filter.


    Sent from my iPhone using Tapatalk
    I am in Riverside County and if you need to see my filtration system for 12,000 gallon pond then let me know. Spend money on RDF, build your own bio filter and I guarantee you will never be a slave to your pond again.

  7. #7
    reefcartel's Avatar
    reefcartel is offline
    reefcartel
    has not specified a status.
    Member
    Join Date
    Nov 2014
    Posts
    51
    Quote Originally Posted by vipertom1970 View Post
    I am in Riverside County and if you need to see my filtration system for 12,000 gallon pond then let me know. Spend money on RDF, build your own bio filter and I guarantee you will never be a slave to your pond again.
    Sounds great. Whats an RDF?


    Sent from my iPhone using Tapatalk

  8. #8
    mplskoi is online now
    mplskoi
    is still learning
    Senior Member
    Join Date
    Jul 2013
    Location
    Minneapolis
    Posts
    923
    Rotating drum filter.
    Will remove basically all of the debris, right down to fines, from your system. They can be spendy. But there are more and more great quality used ones on the market for 2-3k $. Put in one RDF and one set up of bio and you can have crystal clear water and perfect parameters.
    Some of the used ones may be a bit quirky or challenging to use. But no one who has had an RDF (that I know of) ever went away from an RDF.
    Find Kevin32- he has a NEW BE RDF for around 3k$.

  9. #9
    vipertom1970's Avatar
    vipertom1970 is online now
    vipertom1970
    has not specified a status.
    Senior Member
    Join Date
    Dec 2009
    Location
    California
    Posts
    3,138
    Rotary drum filter, it's an automated mechanical filtration system dumping the fish waste and dirty particles down to 60 microns +- every hour.

  10. #10
    jrlaubin's Avatar
    jrlaubin is offline
    jrlaubin
    1st pond 1992
    Senior Member
    Join Date
    Apr 2011
    Location
    northern California
    Posts
    1,040
    there is alot of hand claning involved with the oase filter. start with an affordable compact sieve..take a trip to Koi enterprise in west sacramento..time well spent ask lots of questions

  11. #11
    kevin32 is online now
    kevin32
    is getting tired
    CKK in training
    Join Date
    Aug 2014
    Location
    brentwood ca. up north
    Posts
    3,209
    I have my rdf for $2400. I am in east bay also. you could get the rdf and then just do a diy shower setup or even a diy moving bed filter..

    if you need help let me know. I know you are on a budget but as said the rdf will save you from constantly cleaning all the time. the ultrasieve 3 can also be bought for $1500 and does a geat job also. I would never have a pond without a sieve or rdf in place. to much work and no time enjoying the fish

  12. #12
    reefcartel's Avatar
    reefcartel is offline
    reefcartel
    has not specified a status.
    Member
    Join Date
    Nov 2014
    Posts
    51
    Quote Originally Posted by kevin32 View Post
    I have my rdf for $2400. I am in east bay also. you could get the rdf and then just do a diy shower setup or even a diy moving bed filter..

    if you need help let me know. I know you are on a budget but as said the rdf will save you from constantly cleaning all the time. the ultrasieve 3 can also be bought for $1500 and does a geat job also. I would never have a pond without a sieve or rdf in place. to much work and no time enjoying the fish
    So i need both an Ultra Sieve and RDF or one or the other plus a bio filter?


    Sent from my iPhone using Tapatalk

  13. #13
    kevin32 is online now
    kevin32
    is getting tired
    CKK in training
    Join Date
    Aug 2014
    Location
    brentwood ca. up north
    Posts
    3,209
    Quote Originally Posted by reefcartel View Post
    So i need both an Ultra Sieve and RDF or one or the other plus a bio filter?


    Sent from my iPhone using Tapatalk
    one or the other

  14. #14
    vipertom1970's Avatar
    vipertom1970 is online now
    vipertom1970
    has not specified a status.
    Senior Member
    Join Date
    Dec 2009
    Location
    California
    Posts
    3,138
    Quote Originally Posted by reefcartel View Post
    So i need both an Ultra Sieve and RDF or one or the other plus a bio filter?


    Sent from my iPhone using Tapatalk
    Ultra sieve+bead filter(or sieve +S&G fter)+ maintenance =RDF

    Sieve by it self will not give you water clarity, it will only filter out large solids above 200 microns.
    Last edited by vipertom1970; 04-09-2017 at 04:11 PM.

  15. #15
    kevin32 is online now
    kevin32
    is getting tired
    CKK in training
    Join Date
    Aug 2014
    Location
    brentwood ca. up north
    Posts
    3,209
    Quote Originally Posted by vipertom1970 View Post
    Ultra sieve+bead filter(or sieve +S&G fter)+ maintenance =RDF

    Sieve by it self will not give you water clarity, it will only filter out large solids above 200 microns
    he is on a budget of about $3,000. might have to add the sieve or rdf later. I suggested a evolution pump to save cost and do do a diy moving bed filter also.

    most peole use a 300 micron I'm sieve. so the rdf Is 60 to 80 micron. about 5 times the fines removal.
    Last edited by kevin32; 04-09-2017 at 04:29 PM.

  16. #16
    Rich L is offline
    Rich L
    has not specified a status.
    Senior Member
    Join Date
    Apr 2005
    Location
    Fremont, CA
    Posts
    566
    Quote Originally Posted by kevin32 View Post
    he is on a budget of about $3,000. might have to add the sieve or rdf later. I suggested a evolution pump to save cost and do do a diy moving bed filter also.

    most peole use a 300 micron I'm sieve. so the rdf Is 60 to 80 micron. about 5 times the fines removal.
    You can build your own bead filter and automate the dump so it dumps twice a day, using a blower! That's about as good as an RDF, and better than 95% of the rest of the ponds!

    Then a fluidized bed using kladness! I have plenty of kladness, maybe we can work something out! Maybe some medea for the bead filter as well!

    Don't get a pump until the pond is close to being finished and you know precisely what your system is. In fact, if I can line up a spare pump, we can determine exactly what pump you need.

    I live down in Fremont!

  17. #17
    Russell Peters's Avatar
    Russell Peters is offline
    Russell Peters
    has not specified a status.
    Senior Member
    Join Date
    Dec 2007
    Location
    people vehemently defend their purchases and find it incredulous that anything could be better
    Posts
    24,362
    I am in Lafayette CA if you want to see a working RDF and talk filtration. There is NOTHING as effective as an RDF.
    people like to vehemently defend their purchases and find it incredulous that anything could be better

  18. #18
    reefcartel's Avatar
    reefcartel is offline
    reefcartel
    has not specified a status.
    Member
    Join Date
    Nov 2014
    Posts
    51
    Quote Originally Posted by Russell Peters View Post
    I am in Lafayette CA if you want to see a working RDF and talk filtration. There is NOTHING as effective as an RDF.
    Sounds like a plan


    Sent from my iPhone using Tapatalk

  19. #19
    reefcartel's Avatar
    reefcartel is offline
    reefcartel
    has not specified a status.
    Member
    Join Date
    Nov 2014
    Posts
    51
    Hello. So ive been making some progress with the pond (or at least i hope so lol) but i am currently getting my things together and figuring out what my next step should be. So far I have dug a foot deeper and I should almost have about 4 feet of depth.

    Should I dig a trench for the bottom drain? If so, where should i lead it to? Also, I found this Underlayment and Liner deal on Amazon.

    Should I get these set up first then add the filter last?






    Sent from my iPhone using Tapatalk

  20. #20
    reefcartel's Avatar
    reefcartel is offline
    reefcartel
    has not specified a status.
    Member
    Join Date
    Nov 2014
    Posts
    51
    Just for reference. I took some progress pictures of the Pond. Fyi this was an abandoned pond that I salvaged so there is a pipe leading from the Skimmer box to the other side of the pond but the pipe is hidden on the outside circumference of the pond. (Does that make any sense? lol)





    Sent from my iPhone using Tapatalk

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •