Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > gypsum in the mash
Thread Tools
Old 05-12-2007, 09:18 AM   #1
Feedback Score: 0 reviews
Join Date: May 2007
Location: Portland, OR
Posts: 247
Liked 12 Times on 10 Posts
Likes Given: 1

Default gypsum in the mash

I'm planning on doing my first all-grain brew tomorrow i've done a lot of planning and researching so I'm hoping all goes well. I'm a bit worried about one thing though, I forgot to get some food grade gypsum for the mash water. I filtered all my water through a brita water filter because my tap water doesn't have the greatest taste in the world and i'm not sure if that would filter out any calcium that might already be present in the water. There isn't a homebrew store in my town and I don't know where else I may be able to get gypsum for brewing. My dad has a bag of gypsum which he adds to the soil in his garden once a year, would that work or is it probably not food grade? Are there any possible subsitutes which are easily accessible which would add the calcium ion to the brew? Ok, one last question, should I even worry about this or will my enzymes do just fine without adding gypsum? Thanks.


austinb is offline
Reply With Quote
Old 05-12-2007, 09:55 AM   #2
Feedback Score: 0 reviews
Join Date: Jan 2005
Location: Liberty, Texas
Posts: 647
Liked 3 Times on 3 Posts
Likes Given: 6


What are you brewing.......You probably dont even need it.

Dark_Ale is offline
Reply With Quote
Old 05-12-2007, 11:23 AM   #3
Will work for beer
Feedback Score: 0 reviews
Dude's Avatar
Join Date: Jan 2005
Location: Knob Noster, Missouri
Posts: 8,842
Liked 76 Times on 66 Posts
Likes Given: 9


I agree, you probably don't even need it. We have no way of telling unless you could provide us a copy of your city's water report.

What do they say? RDWHAHB? Yep! Your mash will be fine and your beer will turn out great!
On Tap: Lake Walk Pale Ale -- Eternity (Raspberry Stout) -- Nutrocker -- Donnybrook Dark
Primary: Lake Walk Pale Ale
Secondary: Summit IPA
Up Next: Smoked Porter -- Pub Ale -- Watermelon Wheat
Gone But Not Forgotten:

Dude is offline
Reply With Quote
Old 05-12-2007, 01:05 PM   #4
Senior Member
Feedback Score: 0 reviews
ajf's Avatar
Join Date: Oct 2005
Location: Long Island
Posts: 4,643
Liked 103 Times on 97 Posts
Likes Given: 39


I'd also agree about not adding gypsum unless you really know that you need it.
Don't use the agricultural grade gypsum. Not only is it not food grade, but it is also not pure gypsum. It has all sorts of other thing in it which won't hurt the garden, but which vould hurt the brew.

ajf is offline
Reply With Quote
Old 05-12-2007, 03:10 PM   #5
HomeBrewTalk 2012 Vendor Giveaway Participate
Vendor Ads 
Feedback Score: 2 reviews
Jaybird's Avatar
Join Date: Jul 2006
Location: Nor*Cal
Posts: 6,797
Liked 656 Times on 457 Posts
Likes Given: 186


Need a False Bottom for your Keg, Kettle or Cooler?

I have been making custom False Bottoms for just about everything since 2008

Nor Cal Brewing Solutions, Reddings local homebrew store
(530)243-BEER and (530)221-WINE

Still have questions PM me here or hit the website.

http://www.norcalbrewingsolutions.com and like us on Facebook https://www.facebook.com/NorCalBrewingSolutionsfor Facebook only promos too
Smoke Cigars? www.stogietoys.com

*Member: The HBT Sweaty Fat Guy Cigar Club
Jaybird is offline
Reply With Quote
Old 05-12-2007, 04:31 PM   #6
Feedback Score: 0 reviews
Join Date: Feb 2007
Location: Port Townsend, Washington
Posts: 607
Liked 1 Times on 1 Posts


Found this report:
It does look like pretty soft water. I don't think you will have a problem with soil conditioning gypsum:
You might even find the same info from that particular supplier.

Primary: , Boddington's Clone, Mirror Pond w/Marris Otter
Bottled: Fullers ESB Clone
Kegged: Mirror Pond Clone
Drinking: BM's Kona Fire Rock, Dead Guy Clone, Alaskan Amber Alt Clone, Firestone DBA Clone, Magnum/Crystal IPA
Next up: Burton IPA
raceskier is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gypsum for my IPA. WorryWort All Grain & Partial Mash Brewing 5 06-18-2012 04:30 PM
Gypsum Spludge All Grain & Partial Mash Brewing 5 05-17-2009 02:05 PM
no gypsum balto charlie Recipes/Ingredients 2 07-04-2008 08:39 PM
Gypsum Potsy Beginners Beer Brewing Forum 5 11-18-2006 03:17 PM
Gypsum joeyuwp Beginners Beer Brewing Forum 4 09-04-2005 11:47 AM

Forum Jump

Newest Threads