Perhaps off topic, but I've tried to use this recipe and wasn't very successful.homeburrero wrote:I use powdered CaCO3, MgCO3, and KHCO3. I add about 1g of each to a 750 ml swingtop stoppered bottle for my concentrate. That concentrate is cloudy with undissolved CaCO3, so I need to shake well before using. I add a shotglass (~44ml) of that to 3L of purified water in a gallon glass jar get my brew mix. If I let that sit a while all precipitate dissolves fully - I never see precipitate in the bottom of the gallon jar. Generally on my Giotto I'm even lazier - every night I simply fill the reservoir direct from the Zerowater jug, then followup with a partial shot of my concentrate (shooting for roughly 40 ml per full reservoir tankfull.)
I'm not a true believer in this mix. It's easy for me, but I'm not convinced it's any better than simple 100 mg/L KHCO3 (rpavlis) water. Like the rpavlis water, my water has good alkalinity and zero chloride or sulfate, which appeals to my paranoia about brass and copper corrosion in my older espresso equipment.
I've created the concentrate, which was indeed cloudy.
After letting it sit for a few days in the fridge, the CaCo3 sank down to the bottom of the bottle.
Just before preparing the water, I shook the bottle well and the water became cloudy again.
Then I measured 44ml to be added to 3L of distilled water.
My resulting water measured 1-2dKH and also GH was rather low.
What am I doing wrong? Should I have poured the 44ml quicker? How fast does the CaCo3 sink after shaking the bottle?
Is it possible that I've made some mistake when creating the concentrate (though I was very careful while preparing it)?
Any idea or advice?
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