kalkwasser

Discussion in 'Water Parameters and Additives' started by Jinx, 17 Jan 2010.

  1. Jinx

    Jinx

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    Hey guys I bought myself Seachem's kalkwasser today.I bought a small 4.7l container and a very small pump to stir the solution all the time.Is this o.k?

    How do I go about to determine what my drip rate should be????
    My ph is at 8.4
    alk 1.7 milli equaivalents p/l
    calcium is 350 ppm
     
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  3. preshan

    preshan <img src="/images/ecrccom.gif">

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    Hi Jinx if possible put a timer on this pump , running it continiously in a saturated solution of kalk will damage it very quickly

    What is you total system volume and what are you using as your topup ?
     
  4. Jinx

    Jinx Thread Starter

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    +/- 260 l.Just R.o water...at the moment.
     
  5. martin

    martin Reef Adict

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    Yip you gotta be careful of too much movement thats why it should be a very slow stirring motion.
     
  6. Jinx

    Jinx Thread Starter

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    Thanks....
     
  7. inflames

    inflames

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    Hi Jinx,

    The way I dose Kalkwasser is as follows. Mix 2 heaped teaspoons in just over 4 litre's of RO. I leave it to stand for the day. So mix in the morning and syphon at night. I then syphon about 4 litres out of the container into 2 x 2litre bottles. I syphon the clearish water from the 4 litre bottle leaving behind the sediment that collects at the bottom of the container and make sure not to get syphon the top bit of the container. This is then dripped into my sump at about a drop a second. I only add it when my Main DT lights go off. This is to minimise the PH swing in the tank. Kalkwasser has a PH over 12!! It takes about 45min to an hour to have the 4litres dripped into the tank. The 4litres I add would be normal RO water top up due to evaporation daily! I add another 4 litres of RO to the left over sediment container and use it again, only once more though...so 2 heaped teaspoons of Kalk give me about 8 litres of Kalkwasser!

    Hope this helps!
     
  8. brentv

    brentv

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    The sediment left at the bottom of the container once you've let your kalk stand, is it undesiarable??? or just undiluted?
     
  9. vinnyn

    vinnyn

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    what really happens if u do add that thick sediment into the sump?
     
  10. Garethmur

    Garethmur

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    Whats a kalkwasser for, what does it do?
     
  11. vatso

    vatso

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    I use a phosphate reactor I put half a cup of Kalk in it

    My auto top up pump pumps the ro water through the reactor into the tank - the kalk is mixed when the pump starts & only the clear kalk liquid go into my tank

    works like a charm
     
  12. Jacojs

    Jacojs

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    Tagging with, I also wanna know.
     
  13. inflames

    inflames

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    Kalkwasser is german for Lime water. Lime or kalk is Calcium. So its Calcium water, or water saturated to a point with calcium. We used calcium water to top up our tanks to replenisg the calcium that is used up by our corals, inverts and so on! Thats a very basic explanation! Kalkwasser has a high PH (of 12 odd) thats why we drip is slowly to minimise the PH swing in our tanks! As far as the "sludge" at the bottom is concerned, I dont think its harmfull to the tank, just useless or pointless to add it, this is because this is the left over calcium that could not be "absorbed" into the water column...make sense?!?!? There is also something to do with the oxygen molucules bonding to the water and remaining calcium molocules that makes up this sludge and renders it useless...I think!!
     
  14. vatso

    vatso

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    My Understanding of Kalk - is that it increases Alk & Ca as well as PH.

    the fact that increases PH so high makes it dangerous to us in large amounts.

    So rather see it as a product that will assist in maintaining your Alk & CA.

    Also normal RO water PH level is not as high as your salt water all my ro water goes through kalk to increase the PH level when it goes into my tank
     
  15. Garethmur

    Garethmur

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    Thanks inflames, now we know jacojs ... :)
     
  16. christiaan

    christiaan

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    Remember that the kalkwasser u buy at the lfs @crazy prices is exactlly the same thing as "gebluste kalk" u buy at discem for like 3 rand!

    Also read up on carbon and kalk - add the kalk to the viniger, mix and then to the RO, let sit and then use the clear solution, larger tanks and those with very high ca needs also use the paste left behind, I havent tried it.

    Make your kalk failsafe too - avoid gettting a big dump of it into your system!
     
  17. vatso

    vatso

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    What ratio would one add Kalk & Vinegar? to get a PH of 8.3?
     
  18. neo

    neo

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    @vatso, w.r.t post 10, is the reactor full of a mixture of kalk and ro water and when your topup pump runs it pumps ro into reactor and reactor overflows into your system ? and when topup pump stops the reactor stays full of the kalk/ro mix ?
     
  19. christiaan

    christiaan

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    This is my recipe

    Use only fresh RO/DI

    I mix 5 litres at a time

    First take 3 heaped teaspoons of "gebluste kalk" from discem and mix with about 50 mL white vinegar BEFORE adding it to the water. Now add. Shake and let stand an hour or two. A bunch of precipitate forms at the bottom(DO NOT ADD THIS TO YOUR TANK)

    Drip the water above this precip into your tank at a slow but regular rate!

    Thats it. hope Im doing it right

    It works great:)
    Its cheap:)
    pH, Ca and alk is balanced and stable:)

    It takes time:(
    DONT overdose:(
     
  20. christiaan

    christiaan

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    Find the reefkeeping magazine article on why the viniger works - technical but good artical. Its better for pH and carbon allows for much more available ca
     
  21. neo

    neo

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    @christiaan, how often do you do it ?
     
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