Kalk Stirrer

Discussion in 'Test Kits, Controllers, Reactors and Dosers' started by seank, 11 Mar 2014.

  1. seank

    seank

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    Need some info as I have been off the market for some time.
    I used to run the tank with a kalk Stirrer but when I restarted, I omitted it. However, I want to add it again, but do not know the different types and prices etc.
    I used to have this:

    [​IMG]


    This type of Kalk Stirrer worked well for me and I am looking for something similar.

    Any ideas, prices and availability please
     
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  3. irie ivan

    irie ivan MASA Contributor

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    Hi Sean. Have been tempted to go that route for many years, but my mind always goes back to an old article by RHF:

    The Degradation of Limewater in Air by Randy Holmes-Farley - Reefkeeping.com

    Havent seen your system in person, but considering its size, I assume that you have a bit of space in the engine room? A drum, RO, kalk and a lid on it will be just as good....
    I have never blown a pump on my top up which is heavy loaded with the white stuff.

    And those units featured in your pic have always bothered me, as I would think a lot of kalk passes through the impellor.....
     
    Last edited: 11 Mar 2014
  4. seank

    seank Thread Starter

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    I used the drum method Ivan, the problem I kept on encountering (which after 2 years was more a burden than anything else) was that when the auto top off switched on, water was pumped from the reservoir (230lt blue plastic drum) to the sump, but when the float switch, switched off, the water would still "pump"/siphoned through...
    And every time this happened, I had to move the pump either higher up or lower down in the tank. I blew about 5 small pumps during this last few years, as sometimes the auto switch would kick in, but the pump was too high and it ran dry, stuffing up the impellers.... I hated the system, and was actually glad when I switched it off on Friday.
    The problem was that the reservoir is higher than the Sump
     
    Last edited: 11 Mar 2014
  5. irie ivan

    irie ivan MASA Contributor

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    Sh!t...
    and the stirrer would be lower than the sump?
     
  6. seank

    seank Thread Starter

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    @irie ivan , here you can see the Blue drum setup


     
  7. RiaanP

    RiaanP Moderator

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    I bought your reactor years ago. :tt2: Cannot have it back....

    That setup of your is not going to work.
    When the blue drum is full, it will keep on siphoning. When almost empty it should not.

    Another option is to use the 250L Big Jim Bins from Plasticland. But they will need more horizontal space.
     
  8. RiaanP

    RiaanP Moderator

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    these
    [​IMG]
     
  9. seank

    seank Thread Starter

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    Ohh, and another thing. I used to buy (the first tank setup) a type of Calcium something (also a white powder substance I added to the Stirrer) from @millepora but cannot remember what it was. It was definitely not the "off the shelf" kalkwasser.

    I also need the stuff again, but do not know what it was
     
  10. seank

    seank Thread Starter

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    Riaan, I would much rather go for a stirrer again. Do not want to use unnecessary space, and it is more controlled.
     
  11. RiaanP

    RiaanP Moderator

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    or else, you can build yourself a siphon break station.

    [​IMG]

    My blue drum is also higher than the sump
    RO pipe just enters the 50mm pipe. Its open at the top. Fills up, and drain via the 20mm pipe at the bottom. INSTANT siphon break.

    I got a triple unit, feeding 3 sumps. All well below the blue drum. No problems.
     
  12. RiaanP

    RiaanP Moderator

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    can use Slake lime / Gebluste Kalk
    From the Pharmacy.
    Cheap...
     
  13. RiaanP

    RiaanP Moderator

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    here is another pic of the siphon break station
    From the front. The top is slightly higher than the blue drum. Entry pipe just hooks into it.

    [​IMG]
     
  14. seank

    seank Thread Starter

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    Ok, after reading my own thread (Bad idea) I found the name:

    "Calcium Hydroxide AR".
    I need this stuff please
     
  15. irie ivan

    irie ivan MASA Contributor

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    No Man Sean. Go with a more shallow drum like Rian said, save the money a reactor will set you back. Lose the blue drum, don't see too much space being wasted if you do.
     
  16. irie ivan

    irie ivan MASA Contributor

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    AR Grade refers to Analytical Reagent grade or better said, the standard Mallinckrodt grade of analytical reagents.

    Good stuff, less impurities, but considering that Calcium Hydroxide is self purifying, not really needed for Kalkwasser.
     
  17. seank

    seank Thread Starter

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    Thanks Riaan. Will try it for now.
    Ivan, do I add it to the drum with the RO in it and mix it every now and then, or do I add it to the sump in powder form on a daily basis??
     
  18. irie ivan

    irie ivan MASA Contributor

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    NOOOO, not straight into the sump.... Unless you want to have caustic sushi!

    You add it to the drum with the RO, and close the lid. Whenever you top up the RO drum with RO, add a teaspoon for every four litres of RO added to RO drum and stir.
     
  19. irie ivan

    irie ivan MASA Contributor

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    Just remember, with KALK, do it slowly. when topping up from your RO drum containing Kalk, put a tap on the line dripping into your sump, as adding kalk too rapidly, will spike pH and kil stuff!
     
  20. Glynn

    Glynn

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    Sean why not lift the drum a little higher and use a solinoid switch to control top up..? It takes 4 mm pipe so over dosing can be controlled.
     
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