For all those interested:
I have been using Andy's "Kalk" for close to 1 year in my 90gal mixed reef.
I was unhappy with the brown-grey sludge left over by the Seachem Kalk and buying it on this Island, it costs way more than $12 or $20/l....so...I was in Calgary and got some from Andy to try.
Just to clear up a couple of points (IMHO):
Right you are Shao, this is Calcium hydroxide( assuming it is still the same kind), pharm/food grade (read it on the bag) otherwise known as kalkwasser (chalk water) when dissolved in water. The Canadian FDA (whatever it is called) doesn't approve calcium hydroxide for human consumption...sooo, in Canada at least, it officially can't really be called pickling lime.
...all the same stuff whatever you call it.
...back to the story....
This Kalk is a finer powder than Seachem, dissolves better and leaves virtually no residue...(esp with a little vinagar). Resulting in kalkwasser of about 650ppm calcium.
I will be building a reactor soon and am looking forward to seeing how this Kalk performs...esp. pertaining to max calcium output and accumulated residue in the reactor....Anyone who trys this please let me know how it worked in a Neilson reactor.
I recommend this product over the commercial Seachem kalk anyday! and since markets tend to be competitive, I suspect EBV is no better.
As with ING .....and save your Money!
Thanks Andy