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  • New pumps and UV units

    Previously I had two UltraSieve III units feeding one Flowfriend pump and one Viper 400watt UV that delivered water to my single shower stack. So last weekend I removed the Flowfriend (and later sold it) and removed the Viper (gave it to someone). Definitely kept the two USIII units.


    CAPEX previous system: A new or replacement Flowfriend is around $2500. A new 400watt Viper unit is around $2500. A Viper 400watt replacement lamp and quartz sleeve now lists for over $500 and wholesales for over $300.

    CAPEX new system: A Periha 25000 pump is around $230 each and a Jebao STU-75 UV unit is $179. Replacement 75watt lamps or quartz sleeves are around $30 each.


    OPEX previous system: Flowfriend used around 360 watts at 1800rpm. Viper used around 500 watts (lots of energy loss as heat by the large transformer). Total energy used around 850watts.

    OPEX new system: Periha 25000 each use 160 watts at highest speed. Jebao UV uses 75 watts (very little energy lost as heat by ballast). Total energy used by 2 pumps and 2 UVs around 470 watts. Roughly a 50% savings in energy consumption for the approximately the same flow rate through the shower.


    New benefit: Redundancy. Each circuit of USIII, pump and UV is not independent of the other circuit. So if need to do maintenance on one side, I can still have the shower running....with half the flow rate.


    Bottom line: If planning a new pond or revising an existing one, check for the latest products available for your application. You may be able to save both on CAPEX and OPEX.






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    Koi keeping is not a belief system; it is applied science with a touch of artistry.
  • #2

    Originally posted by MCA View Post

    CAPEX new system: A Periha 25000 pump is around $230 each and a Jebao STU-75 UV unit is $179. Replacement 75watt lamps or quartz sleeves are around $30 each.
    How do you find the performance on the Periha pumps? I've had my eye on these for a while when pricing out the construction of a few new systems. Do you find them reliable, and do they produce the listed GPH? Even if they produce 80% of what is advertised, I'm very tempted to use these.
    Brian Sousa
    Koi-Bito Forum

    Miyabi Koi Farm[/B]

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    • #3

      Like them very much. The first I one I got last year has been pushing water through an Aquadyne 4cf bead filter. With all that back pressure it only does around 2,500gph. But that is fine for a skimmer circuit. No problem with the pump sitting out in the weather for a year. So last weekend I put two two of them into service for the shower. Each does around 4000gph pushing upwards for around 7 feet of height and through the UV lamps. So I am pleased with the flow vs the watts consumed. For a application such as feeding a shower 4000-5000gph, I think they are worth the investment. You can get them from Tom Tran at Seaside Aquatics, via Amazon, or even eBay.
      Koi keeping is not a belief system; it is applied science with a touch of artistry.

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