Hey Guys,
I finally figured out some problems I've been having with a few of my hef brews.
To give a little bit of a back story, I've brewed this at least 4 times and have only had 2 great batches and 2 or 3 mediocre batches. It was really bothering me and I've PM'd 944Play a few times to get some other eyes on this as well.
It turns out that wheat malt significantly raises the PH of water and you need to accommodate this with your minerals (And probably acid malt). The first two brews were using spring water that I got from my local grocery store, and those were the two that turned out so well. In addition, I used 5.2 ph stabilizer.
However, with the last few batches, I used Reverse Osmosis water and used the EZ water calculator 2.x spreadsheet. When I used this spreadsheet, it told me that my ph levels were fine with the grain bill and water adjustments that I entered (5.52). This is why I decided not to use the 5.2 stabilizer anymore. Unfortunately, I just now realized that this spreadsheet didn't take specific types of grain into consideration when calculating the PH levels (Only 2.x and prior). Now that version 3.x is out, it asks which specific grains are in the grain bill and takes it into consideration.
I noticed that wheat malt is by far the grain with the greatest influence on PH increase out of any on the list. Once I put my old water additions into the new calculator, my ph showed 5.87! Well above the recommended for good efficiency and also to ensure that tannins aren't extracted from the husks. Needless to say I'm kind of pissed and relieved at the same time. It's starting to make sense why I had such a significant drop in quality. Since my other beers don't use wheat malt, my old additions from the 2.x spreadsheet still came within the recommended PH range.
Long story short (too late), do one of the following for this brew (and any others that use wheat):
1. Use acidulated malt to decrease mash PH (only 8 oz in my case)
2. Update your spreadsheet to 3.x if you are using EZ water clalculator to help with the proper adjustments
3. Use spring water from the grocery. If your PH levels need adjusting, use 5.2 stabilizer or mineral adjustments on the fly
I hope someone learns something from my mistake.
I will be brewing this again with the proper adjustments in the coming weeks. I'll keep you all up to date with how this next brew turns out.