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The Brewing Forum • View topic - LOADS of CRS - hope its tasty?
Page 1 of 1

LOADS of CRS - hope its tasty?

PostPosted: Tue Jul 26, 2016 14:09
by Pigswill
Hi all,

My water is pants.... I do drink it, but only because I've lived in the area most of my life and I'm used to it. It's it's not uncommon for people coming to the area to get a dicky tummy for a few days while getting used to it. I sometimes brew with it, I sometimes use Tesco Ashbeck water, but the results have been fairly average.

I've run my water through a calculator and it says I need 54.5ml of CRS..... which seems like a lot! Am I doing this right?

My water report says (taking the mean values, not the max)

Calcium Ca - 118.44
Magnesium Mg - 4.03
Sodium Na - 20.97
Sulphate So4 - 38.26
Chloride Cl - 36.12
Carbonate Co3 - Not stated but I do have a value of 310mg/l CuCo3

I've based calcs on 35l as I do a full volume mash and targeting a pale ale (although any improvement would be nice) and I tend to add a whole Campden tablet as my water smells a lot of chlorine. (the report gives a value of 'residual disinfectant - total' of 0.53).

I've also had a go on the Greg Hughes residual alkalinity nomograph, but I was almost off the scale.

Any assistance appreciated, thanks.

Re: LOADS of CRS - hope its tasty?

PostPosted: Tue Jul 26, 2016 15:27
by Eric
I get a lower level for alkalinity based on the other amounts you posted, and hence a lesser amount of CRS necessary.
Whatever the alkalinity is you would be wise to purchase a Salifert (KH) kit to measure it before and after treatment with CRS. Reducing alkalinity to the right amount will make a vast difference to the finished beer, whtever you think of your water.
Good luck.

Re: LOADS of CRS - hope its tasty?

PostPosted: Wed Jul 27, 2016 07:05
by Pigswill
Thanks, how much less? - which calculator are you using?

I've been using the one on the (ahem) 'other' forum...

I cant help but think that using this much CRS can only be detrimental to taste, but I'm reluctant to down a glass of CRS to see what it tastes like. :drink: :sick:

Re: LOADS of CRS - hope its tasty?

PostPosted: Wed Jul 27, 2016 07:14
by mark1964
The one on Jim's beer kit is better. Don't use the water companies report for alkalinity as it's not accurate. As mentioned already a salifert alkalinity testing kit is needed as the alkalinity changes alot

Re: LOADS of CRS - hope its tasty?

PostPosted: Wed Jul 27, 2016 17:35
by Eric