Where to get kalkwasser, Calsuim hydroxide, pickling lime

theoholder

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Hi, can anyone or if we can get this info from the form.
Where can we buy kalkwasser, calsuim hydroxide or pickling lime?
 

jacquesb

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Just to add to Warr's post - it is actually called "Slaked Lime" (English) or "Gebluste Kalk" (afr) - just ask for this....

The chemical compound name is: calcium hydroxide... This is what you use to make "kalkwasser"....
 

theoholder

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okey so just a quick question. the kalkwasser drip will that only up the calsium in the tank or will it increase the alk aswell?
 

theoholder

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I've been reading up on the kalk drip, but no where can I find how much one should add of the kalk mix into the tank. I"ve got a 270L tank.
Now to start off, can I add 1L of kalkwasser to my tank and then test the calsium consentrate in the tank?
I will make the mix as follows: 1 teaspoon of calsium hydroxide with 15ml of white household vinager and mix, then add the 1L RO water. Stir and let sit for about 2 hours and then drip into tank. Is this the right way of doing it or is the prosses diffrent?
 

jacquesb

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Hello Theo - no - please don't. What I do (and I have a total water volume of +-870 litres in my display tank), is make up the kalkwasser mixture (I use the following formula: +-15-20grams of slaked lime, +-200 to 250ml of vinegar, and the rest RO water and put this in a 2 litre container (old cola bottle).

I then "feed" the tank about 4 to 5 times a week, around 100ml of this mixture (I made a hole in the cola bottle's cape and put a small piece of airline tubing into the cap, to act as a "squirt-bottle".....

So, if you can deduce from this that I dose relatively little......... The more corals you have - the more you would dose....

Important would be to keep your calcium levels monitored, as well as you pH....
 

theoholder

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just one more question, do you add this 100ml all at once or do drip?
 

jacquesb

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Yes - I indeed add this 100ml all at once.... You can set up a dripping system if you want to to add more than this amount, over a much longer period of time (ie over a few hours).... BUT - the important bit is the measurement of your calcium and pH!
 

Reef Maniac

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the kalkwasser drip, will that only up the calsium in the tank or will it increase the alk aswell?
It will increase/add both calcium and alkalinity in a balanced ratio which is exactly right for what the corals take out of the water.

I've been reading up on the kalk drip, but no where can I find how much one should add of the kalk mix into the tank. I"ve got a 270L tank.
Now to start off, can I add 1L of kalkwasser to my tank and then test the calsium consentrate in the tank?
Kalk should be added either by dripping the clear liquid into a high-flow area of the tank or sump (preferably...) at a rate of 1-2 drops per second, or by injecting small quantities (a few ml...) of a 'slurry' into a very high flow area, such as into the stream of a power head outlet.

For more information, check the following posts:

Chemical equivalents - Hennie's Corner
Kalkwasser Question - Hennie's Corner

Hennie
 

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