Wanting to raise my mash pH to at least 5.2, I have been reading about mineral additions of; Gypsum, Calcium Carbonate, Pickling Lime, and Baking Soda. But I don't know which is easiest or best. I considered briefly trying the 5.2 Mash Stabilizer product, but only briefly as the reviews for the 5.2 Mash Stabilizer product is mostly negative, so I don't want to use it. Plus that's not where i will be going to when i step up to water chemistry and additions. I am eventually going to move into water adjustments starting with RO water, but until that time, and for now, I just want to bump up the pH from 4.8 to 5.2. To test for pH (at the end of my 60 minute mash), I use the cheap pH test strips, but from what I have read, they [pH test strips] are typically reading 0.2 points off. I have been hopeful that the 0.2 makes my reading of 4.8 pH, actually a 5.0, but I haven't read where the strips are 0.2 low or high from the actual. And yes... Once I get into water improvements beyond using bottled spring water from the same manufacturer [Deer Park], i will also get a real pH meter. but that's for another discussion and down the road. Nevertheless, and until i am ready and willing to get into the water chemistry side of brewing, my questions are simple (with hopefully simple suggestions): Which should I use... Gypsum, CaCO3, Baking Soda or pickling lime Add to mash or strike water When to add to mash or strike water How much should I does a 5 gallon batch (typically 16-18 qts as I us 1.5 qts/lb of grain ratio) to get from 4.8 to 5.2 Prior to posting this, I was heading down the path of using household baking soda and mixing 1 teaspoon of baking soda to 4 oz. of the same spring water i mentioned above, mix it well (until dissolved) then pour 1 oz. of the solution into the mash (1/4 tsp.), then mix well into the mash and then test in 10 minutes. Although arguably, conversion happens in the first 10-15 minutes, it may be to late to fix if it goes too high. Ps. I was planing on getting some acidulated malt to recover if I over do it, but since the mash conversion happens in the first 10 minutes, it'll probably be too late.