HomeRoast Digest


Topic: Need Calcite Information (4 msgs / 150 lines)
1) From: Richard Stewart
This is a multi-part message in MIME format.
I was reading in the homeroast digest today looking for more information =
on calcite. I remember the topic came up a few weeks ago when someone =
offered up 5, 1lb bags of it as a tradition. If I remember right, you =
put some of the calcite in a jug of water shake it up and use it. I just =
roasted up a lb. or so of a variety of beans and would like to have =
"perfect" water in 24/48 hours from now. 
My questions are;
1) If I am using a 5 gal container, how much calcite do I put in?
2) How long does the water stay in contact with it, when do I pour it =
off?
3) Do I then filter that water?
4) Is the pre-used calcite re-useable?
5) Is there some type of test ( ph strip ? etc.) to see if the water is =
correct? (ph, hardness, & mineral content).
6) I am starting with RO water between 0 & 18 TDS. For "perfect" =
espresso water, is calcite going to be a cure-all?
    ie. will it give me the ph, hardness and mineral corrections I need? =
 
This last week I went to a water drilling/ water well company here =
locally and got 5 lbs of calcite for $3.00.
I talked to the engineer for a few minutes just to make sure I was =
getting the right stuff, but still had other questions.
Any help would be appreciated!
Thanks
Richard Stewart / Hickory Creek, Texas
      " my  Because it can be acidic. RO water makes for a =
very bitter cup of tea, just try it. I treat the RO water with calcite =
to neutralize the acid and add some hardness for flavor. Helps a lot. " 

2) From: miKe mcKoffee
I don't know the answer but it well might be found here in Jim's insanely
long water faq:http://groups.google.com/groups?q=insanely+long+water+faq&hl=en&lr=&ieF-8&oeF-8&selm=c2ognugkaj0302mviasvogmos2atqoihdn%404ax.com&rnum=2KKmKmcK">http://makeashorterlink.com/?H2B452818orhttp://groups.google.com/groups?q=insanely+long+water+faq&hl=en&lr=&ieF-8&oeF-8&selm=c2ognugkaj0302mviasvogmos2atqoihdn%404ax.com&rnum=2KKmKmcK

3) From: Dan Bollinger
This is a multi-part message in MIME format.
Richard, I did that study. See my answers below.
  One note of warning for people using calcite in pour over machines. Make sure
you have a fine inlet screen on the hose end in the tank. Otherwise the pump may
suck up calcite grains that you inadvertently pour in. This happened to me last
week. I didn't have an inlet screen. My IM started acting weird, would make a
shot, boiler pressure gauge pegged when I tried. Turned out a calcite grain got
lodged on the boiler refill solenoid seat preventing it from closing. Dan
    My questions are;
    1) If I am using a 5 gal container, how much calcite do I put in?
    As much as you like! It will not 'over treat' the water, but stops when the
water becomes neutral pH (actually, between 7.0 and 7.2).
    2) How long does the water stay in contact with it, when do I pour it off?
    Give it a good stir for half a minute. That's it. Decant the water and use,
or let it lay on the calcite and draw water from there.
    3) Do I then filter that water?
    Nope, but see warning above.
    4) Is the pre-used calcite re-useable?
    Absolutely! It is a mineral and just keeps working until it is eventually
consumed.
    5) Is there some type of test ( ph strip ? etc.) to see if the water is
correct? (ph, hardness, & mineral content).
    Yes. I buy the water kits available for sale at pet stores.  Your local water
softener vendors will measure hardness for free.
    6) I am starting with RO water between 0 & 18 TDS. For "perfect" espresso
water, is calcite going to be a cure-all?
        ie. will it give me the ph, hardness and mineral corrections I need?
    Almost. It certainly will protect your machine from RO water slowly harming
the boiler. The hardness/pH/ will be better than RO, but not the ideal mentioned
in Jim's ILWfaq. Mine measured 30-40ppm. I think the ideal is about double that.
One advantage is that your boiler won't scale much at all.

4) From: Richard Stewart
This is a multi-part message in MIME format.
Thank You for your answers and input Dan (&MM) ! I did not want to =
destroy so much expensive metal
and this was a GREAT help, again, thank you!
Richard Stewart
Hickory Creek, Texas
 
Re: +Need Calcite Information
Richard, I did that study. See my answers below.
  One note of warning for people using calcite in pour over machines. =
Make sure
you have a fine inlet screen on the hose end in the tank. Otherwise the =
pump may
suck up calcite grains that you inadvertently pour in. This happened to =
me last
week. I didn't have an inlet screen. My IM started acting weird, would =
make a
shot, boiler pressure gauge pegged when I tried. Turned out a calcite =
grain got
lodged on the boiler refill solenoid seat preventing it from closing. =
Dan


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