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  • #16
    Can i use this media instead of k1,,, 15mm dia and 12mm tall not virgin plastic...does it work for my application...i would like to make a system with daily feed rate of 4-5 kg per day...how much would i need for this purpose...
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    • #17
      Hi Aswin...since I haven't used that particular media, I can't comment as to its efficacy. It looks similar to K1 and other manufactured plastic media but that's as much as I can say. I used K1 because the manufacturers stipulate the amount of feed that a given quantity of media will accommodate. Can you approach the supplier for more information?
      "All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident." - Arthur Schopenhauer

      www.garydonaldson.net - my main website.

      https://www.facebook.com/gary.donaldson.161 - my Facebook page.

      https://www.facebook.com/groups/1167267703372756/ - my Microponics and Waste Transformation Farming Facebook Group

      https://www.facebook.com/groups/1318946951452383/ - my iAVs Facebook Group

      www.urbanaquaponics.com.au - the current home of the Online Urban Aquaponics Manual.

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      • #18
        What about incorporating a fluidized sand bed after static bed instead of a k1 moving bed (Preferably a mini form of "Cyclo Bio Reactor", Designed by marine biotech.inc, which needs less pressure to get fluidized and is designed in such a way that the sand will get a cyclonic movement along with lift & have a provision to remove heavily loaded sand from top )
        Attached Files
        Last edited by aswin; 01-07-2018, 12:24 PM.

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        • #19
          12000-liter Fish tank having bio-filter running on Airlift pump at approximate 15000 LPH. No need of water pump...airlift pump alone will serve several functions... 1.aeration 2.circulation 3.degassing 4.foam removal 5.no electric lines in water 6.no moving parts 7.harmless to baby fishes And 5 times energy efficient than water pump in low head applications...Easy to run on solar systems... The biofilter is being coated with biofilm...This filter will keep the Water clear and in good quality...
          Attached Files

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          • #20
            gary..same as your design but water pump is replaced with airlift pump...

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            • #21
              Aswin...if you can achieve the same water flow at the same (or less) energy use, then it might be a proposition...for all of the other benefits that it provides. Since I haven't used an airlift in this design, this is purely my opinion and is not supported by experience.
              "All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident." - Arthur Schopenhauer

              www.garydonaldson.net - my main website.

              https://www.facebook.com/gary.donaldson.161 - my Facebook page.

              https://www.facebook.com/groups/1167267703372756/ - my Microponics and Waste Transformation Farming Facebook Group

              https://www.facebook.com/groups/1318946951452383/ - my iAVs Facebook Group

              www.urbanaquaponics.com.au - the current home of the Online Urban Aquaponics Manual.

              Comment


              • #22
                Originally posted by aswin View Post
                What about incorporating a fluidized sand bed after static bed instead of a k1 moving bed (Preferably a mini form of "Cyclo Bio Reactor", Designed by marine biotech.inc, which needs less pressure to get fluidized and is designed in such a way that the sand will get a cyclonic movement along with lift & have a provision to remove heavily loaded sand from top )
                Aswin...this device looks as though it would be quite expensive compared to a moving bed biofilter. I do know that most fluidised sand filters require adjustments to the pumping pressure as they load up with solids.
                "All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident." - Arthur Schopenhauer

                www.garydonaldson.net - my main website.

                https://www.facebook.com/gary.donaldson.161 - my Facebook page.

                https://www.facebook.com/groups/1167267703372756/ - my Microponics and Waste Transformation Farming Facebook Group

                https://www.facebook.com/groups/1318946951452383/ - my iAVs Facebook Group

                www.urbanaquaponics.com.au - the current home of the Online Urban Aquaponics Manual.

                Comment


                • #23
                  https://www.youtube.com/watch?v=r7KZCCbVVqA

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                  • #24
                    What about using lamella settler or Tube settler as sedimentation propose instead of RFS...it looks efficient...but I don't know its potential in an RAS system....PLZ help

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                    • #25
                      Hello Gary,

                      I discovered aquaponics on the web and decided to learn using internet websites and forums
                      I also found a lot of very interesting informations on your website
                      http://www.urbanaquaponics.com.au/home
                      Online Urban Aquaponics Manual - Home

                      Also came here
                      i live in an appartement but want to start soon to diy my first aquaponics System on my balcony

                      I wanted to thank you for all your documentation, providing informations and help to beginners like me

                      You said that third edition of the "urban aquaponics manual was available free online
                      ...." I'll also continue to make the 3rd Edition available for those who want to compare the two versions...and you'll be able to find that...HERE "....

                      Read it with attention but found several chapters missing
                      for example chapters , 5 ,11 , 15, 16 ....and others

                      Could it be please possible to get access to these chapters ?

                      I will finally say thanks again for preparing the fourth edition.
                      As you asked, I will follow your updates and will add any questions/comments I will have

                      Regards,
                      Jean-claude

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                      • #26
                        Hi tshado
                        All the chapters you list as examples are available, in your link. just hoover the cursor over the headlines and click Chapter 5 - The Aquaponics Ecosystem


                        Originally posted by tshado View Post
                        .and you'll be able to find that...HERE "....[/I]

                        Read it with attention but found several chapters missing
                        for example chapters , 5 ,11 , 15, 16 ....and others

                        Could it be please possible to get access to these chapters ?

                        I will finally say thanks again for preparing the fourth edition.
                        As you asked, I will follow your updates and will add any questions/comments I will have

                        Regards,
                        Jean-claude
                        cheers

                        Comment


                        • #27
                          Welcome aboard Jean-claude...and thanks Ande for picking up on my omission.

                          Ande has clarified how you get to what you believe are the missing chapters of the 3rd Edition. The 4th Edition is being rolled out (very slowly) on my blog site.
                          "All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident." - Arthur Schopenhauer

                          www.garydonaldson.net - my main website.

                          https://www.facebook.com/gary.donaldson.161 - my Facebook page.

                          https://www.facebook.com/groups/1167267703372756/ - my Microponics and Waste Transformation Farming Facebook Group

                          https://www.facebook.com/groups/1318946951452383/ - my iAVs Facebook Group

                          www.urbanaquaponics.com.au - the current home of the Online Urban Aquaponics Manual.

                          Comment


                          • #28
                            Originally posted by aswin View Post
                            What about using lamella settler or Tube settler as sedimentation propose instead of RFS...it looks efficient...but I don't know its potential in an RAS system....PLZ help
                            I haven't used this device either so any comment I might make should take that into account. Who says that a tube settler is more effective than an RFS? The choice between the two should take into account the amount of time to be spent cleaning the devices.
                            "All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident." - Arthur Schopenhauer

                            www.garydonaldson.net - my main website.

                            https://www.facebook.com/gary.donaldson.161 - my Facebook page.

                            https://www.facebook.com/groups/1167267703372756/ - my Microponics and Waste Transformation Farming Facebook Group

                            https://www.facebook.com/groups/1318946951452383/ - my iAVs Facebook Group

                            www.urbanaquaponics.com.au - the current home of the Online Urban Aquaponics Manual.

                            Comment


                            • #29
                              I have gone through some posts in Facebook regarding cornel dual drain method ...I know the main aim of incoperating duel drain is to decrease the sisze of clarifier .,is that an effective way to do so....?

                              Comment


                              • #30
                                Originally posted by aswin View Post
                                I have gone through some posts in Facebook regarding cornel dual drain method ...I know the main aim of incoperating duel drain is to decrease the sisze of clarifier .,is that an effective way to do so....?
                                Key features of the Cornell dual-drain are 1) 'swings' (rotates) tank volume which A) assists aeration, B) move solids to central uptake location, and C) forces fish to swim. 2) surface outlet acts as A) protein skimmer and B) overflow
                                Works best with conical bottom profile. Effective but expensive, imo. Good for predatory species (active swimmers),e.g. bass, trout, chars, barramundi? as it forces them to move just to remain stationary. TMK has absolutely nothing to do with potential reduction in appropriate clarifier sizing. Sizing a clarifier (and all other filtration) will mainly be functions of A) feed input volume B) turn-over (exchange, flow) rate, and C) specie's tolerances wrt all water parameters.

                                If you are using Facebook as your primary reference, I don't think you could choose a worse (less competent/reliable/verifiable) information source.

                                If you want a stand-alone recirculatory aquaculture system A) seek appropriate expertise (I'm not), B) spend spend spend and then some more, C) 'pray' that the power never goes off. IMO the cost + risk to reward profile is not even worthy considering. Many professionals who have actually attempted it commercially it will say the same. NO game for amateurs IMO for what that's worth to anyone.
                                Last edited by Mark McMurtry; 04-08-2018, 04:45 PM.
                                "There are in fact two things, science and opinion: the former begets knowledge, the latter ignorance." ~ Hippocrates, "Law", 400 BCE

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