Water Calculator

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Water Calculator

Unread postby Kronos » Fri Dec 28, 2018 8:38 pm

Is there a water calculator available where you can work out how much mash and/or sparge water you need to start with.

I have a BM 20L Plus and want to brew 20 Litres of an ESB Ale, total grain is 4.5kg, mash time is 60 minutes, boil time is 70 mins but I am not sure how much water to mash with and whether I need to sparge and if so with how much water.

Please can someone advise.
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Re: Water Calculator

Unread postby aziztan » Fri Dec 28, 2018 9:53 pm

Hi Kronos,

At 4.5kg you would expect 1.070 for 20L (say efficiency around 70%), ESB sits in the Best Bitter category and they range from 1.048-1.060, it's a FYI in case you're wanting to meet the style.

Fill water up to the top marking of the centre rod (that's 25L assuming your model is 2015 or later). Sparge with 3L water. @70mins you should get 20L into the fermenter. Boil off rate for 2015 BM is 3.5L/hr.

Because the estimated gravity is 1.070, expect to water down to meet the appropriate range (1 048-1.060), you'd likely to end up with more beer but I wouldn't complain. Or skip the 3L sparge.

Wort and Brewfather are both good apps, the latter is a glorified website.

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Re: Water Calculator

Unread postby mashy » Sat Dec 29, 2018 7:30 am

Better still. Top up the fermenter when your are finished. You don't need to boil drinking water. Why waste time and resources. You are not watering anything down, fermentation hasn't started.
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Re: Water Calculator

Unread postby Kronos » Sat Dec 29, 2018 11:37 am

Thank you for the help and advice, it is very much appreciated and will help me a lot.
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