Doing my first partigyle this weekend. I use distilled water and build an appropriate water using various brewing salts using bru n water software. I usually just add my sparge water additions in at the start of the boil to ensure that they all make it into the beer. With this partigyle I plan on doing three runnings via batch sparge. I didn't know if I should worry about adding some more salts to the subsequent mashes or just put them in the kettle as I normally would? I don't have any ph strips and imagine I should probably pick some up as I worry about tannin extraction especially with the third batch sparge. I also plan on probably capping the mash with some more two row with the third mash to boost gravity and to freshen the mash. Any comments/advice is welcome!! Cheers pat.
I've been using 5.2 stabilizer recently, some people poo poo that product but it seems to work for me. It's not dead on 5.2 but close enough. I've also been using more acidulated malt as well to help regulate mash Ph. Get some of the Colorphast strips if you can. I've used a lot of Ph strips and they are the best I've come across so far.
I often do partygyle batches (not with three runnings). I do my standard brewing salt additions when making paler beers. I add to the HLT before mashing in and a "micro-addition" before infusing for the parygyle batch. Darker beers I might not add salts for the first runnings but add them just for the partygyle batch.
i wouldn't worry about tannin extraction from batch sparging, that only really becomes an issue below sg of maybe 1010...and hoping your third sparge will still be well above that level. Also I wouldn't cap it with 2-row, i would cap it with steeping grains such a cara or roasted malt because by that running you're more looking to boost body and don't want to go through mashing again. I'd just add extract if you want to raise alcohol in the third runnings.