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Clear water? Video of a RDF (rotary drum filter)

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  • Clear water? Video of a RDF (rotary drum filter)

    Hi,

    after this pond has been running without maintenance for over 4 month now I have put a video online. The water clarity is great and the koi are doing fine

    RDF + Helix, a match made in heaven

    Here is the link:http://www.koi-collection.com/Gallery/d4water2.html
    cheers.....

    Sven
  • #2

    Thanks for sharing.

    In the States we have had some hobbists using RDFs for many years. One of our club members designs his own and put one of his designs in the previous issue of KOIUSA.

    New Page 1

    KOI USA Magazine


    Why is ozone needed/used?
    Koi keeping is not a belief system; it is applied science with a touch of artistry.

    Comment

    • #3

      Hi,

      yes, this technology is actually on the market for quite some time. In Europe (especially Germany) it is now becoming more and more popular because of the (almost zero) maintenance. The biggest issue was (and still is) the high price

      Since I moved to Indonesia I try to introduce this technology because it simply provides best water quality with minimum space requirement. I also produce these filters locally now and the price difference to any other RDF on the market is huge

      Regarding the Ozone, I use it to vanish the yellowish colour that usually occurs (even if the water is clear). The dosis is very low and the location before the biological stages avoids any Ozone reaching the pond. It's simply a "cosmetic" issue
      cheers.....

      Sven

      Comment

      • #4

        svenni, thanks for that post 1. because I'm new and have never heard of a rotary drum so I'll check that out and 2. because I enjoyed seeing your beautiful koi in video. Don't get to see quality koi around here. I don't know anybody who has any. They are beautiful.
        ...enjoy your day!
        5500 gllns, Ultima II 4000, Tarpon 6000, 1 Multi-Cyclone Prefilter, 2 - 5500 gph pumps, 1 Retro BD, 1 skimmer, max depth 4', 5% trickle 24/7 weather permitting

        Comment

        • #5

          Originally posted by Peppy View Post
          svenni, thanks for that post 1. because I'm new and have never heard of a rotary drum so I'll check that out and 2. because I enjoyed seeing your beautiful koi in video. Don't get to see quality koi around here. I don't know anybody who has any. They are beautiful.

          Hi Peppy,

          thanks for the compliment. The koi in that pond are mainly my show koi and some of them won prices at recent shows here (the shows here usually have fish entries above 1000 koi ). Anyway, I have seen many beautiful koi posted by forum members, so I am sure there are many very good koi available over there as well

          Regarding the drum filter I guess there are some makers on the market. Actually I still try to find a dealer who is willing to market my product in the US.
          cheers.....

          Sven

          Comment

          • #6

            Anyway, I have seen many beautiful koi posted by forum members, so I am sure there are many very good koi available over there as well
            Ah ha! Finally figured out the quote capability again! Forgot how to do that.

            Svenni you are right, many, many beautiful show koi on this forum but I have not seen anything close to where I live like the ones posted here and nobody I know has anything like the koi shown here either. Perhaps I'm hanging out with the wrong crowd!

            I can't even find a koi or water garden club in my area.

            I saw some beautiful koi on an out-of-town trip in the spring. I could not get enough of looking at them!

            Pictures are wonderful to look at but the video of beautiful koi swimming around was great. Thanks.

            I don't know much about koi as far as show points and things like that but your Shusui: Wow!

            Couldn't find much info on the rotary drum on the internet. Perhaps you found a great niche.

            Best of luck to you finding a distributor for your product here.
            ...enjoy your day!
            5500 gllns, Ultima II 4000, Tarpon 6000, 1 Multi-Cyclone Prefilter, 2 - 5500 gph pumps, 1 Retro BD, 1 skimmer, max depth 4', 5% trickle 24/7 weather permitting

            Comment

            • #7

              Originally posted by Peppy View Post

              I don't know much about koi as far as show points and things like that but your Shusui: Wow!
              Seems you know enough about show points. That Shusui won 1st price in the last 2 shows here

              cheers.....

              Sven

              Comment

              • #8

                I'm not surprised. It's perfect.

                I have a Shusui that I bought because it had scales off to the side that formed a perfect heart shape so I had to buy it and name it Cupid. The heart shape disappeared as I thought it might.

                It's far from a show koi. There is a gap in the zipper of scales and I know they're not supposed to have that.

                Shusui are one of my favorites. Those dark scales against the blue--so cool. And the red on blue, that is way cool too.

                I guess with my hard water, though, I shouldn't have bought it. I heard that isn't good for them.
                ...enjoy your day!
                5500 gllns, Ultima II 4000, Tarpon 6000, 1 Multi-Cyclone Prefilter, 2 - 5500 gph pumps, 1 Retro BD, 1 skimmer, max depth 4', 5% trickle 24/7 weather permitting

                Comment

                • #9

                  In the USA, if one could be bought, how much?
                  Bob

                  Comment

                  • #10

                    Originally posted by farne230 View Post
                    In the USA, if one could be bought, how much?
                    Bob
                    Hi Bob,

                    as far as I know from Europe the existing stainless steel models with 30cbm/h flow rate start at around 7500 USD. I build the filters in PVC construction and I sell them here at around 1200 USD. I also produce a smaller model with 12cbm/h flow rate (suitable for ponds up to 18 cbm) which sells here at 1000 USD. I do not know how much the import duty and taxes in the US would be but it should not be too much
                    cheers.....

                    Sven

                    Comment

                    • #11

                      I assume these filters would have to be installed under gravity flow, is that correct. Also in my case I would be interested in flows in the range of 5,000 to 6,000 USA gph.
                      Bob

                      Comment

                      • #12

                        Originally posted by farne230 View Post
                        I assume these filters would have to be installed under gravity flow, is that correct. Also in my case I would be interested in flows in the range of 5,000 to 6,000 USA gph.
                        Bob
                        Hi Bob,

                        I constructed a model that is suitable for either pump fed or gravity fed (so far the models on the market are either for gravity installations or for pump fed installations). All filters have a collector chamber before the drum chamber. There are ball valves in each of these 2 chambers to choose from which chamber the water level is monitored by the sensor. To adapt it to the system there is a switch on the control panel that makes the water level sensor giving the signal for flushing when falling (position for gravity fed installation) or when rising (position for pump fed installation). For the gravity installation the ball valve in the drum chamber will be opened and for the pump fed installation the ball valve in the collector chamber will be opened. The sensor is mounted outside in a transparent pipe which allows easy setting for the flushing.

                        Flow rates available are:

                        12 cbm/h (3170 USA gph)
                        18 cbm/h (4750 USA gph)
                        30 cbm/h (7900 USA gph)
                        50 cbm/h (13200 USA gph)
                        cheers.....

                        Sven

                        Comment

                        • #13

                          Svenni, I don't know anything about import/export, taxes, the law concerning any of that stuff but I'm in the US and I buy collectibles from England on eBay. Just for your information.
                          ...enjoy your day!
                          5500 gllns, Ultima II 4000, Tarpon 6000, 1 Multi-Cyclone Prefilter, 2 - 5500 gph pumps, 1 Retro BD, 1 skimmer, max depth 4', 5% trickle 24/7 weather permitting

                          Comment

                          • #14

                            I' like order 2 - 30cbm from you
                            let me know how can I order

                            Comment

                            • #15

                              Did you realize this thread is 6 years old?
                              Koi keeping is not a belief system; it is applied science with a touch of artistry.

                              Comment

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