I do have a small container of 5.2 that I never opened.
I hope you know what to do with it!
Your other comment about chlorine was also right on. My brewing water passes through a high quality carbon filter, and I do dissolve a 1/4 tablet of campden for every 5 gallons of water that goes into the kettle. The campden I am still a little on the fence about, but I heard reports that my local water company makes a seasonal switch to chloramine, which meant nothing to everyone else in town, but scared me enough to use some campden for insurance. I have come to understand that a carbon filter will not remove chloramine.
I've referenced this quote in other threads, but I think it really bears repeating. I believe it comes from the Little Sumpin' Sumpin' episode of CYBI (could have been Brown Shugga - it's been a while). The brewer was asked about water adjustments. I'll paraphrase.
"We all have access to the same grain, hops, and yeast. The only variable from brewery to brewery is the brewer and the water. Embrace your water, because it is one of the few things that will distinguish your beer."
I think that rings so true, on both a historical and philosophical level. Every style we know was born from the regions water - not the other way around. Personally, I love the idea of my water yielding a great brown or pale ale, but maybe a mediocre (bad) Bo Pils. Brian Hunt from Moonlight talks about that idea a lot. Think about how great beers would be overall if everyone really zero'd in on styles that matched their raw materials (water being a raw material).
I am fascinated by our ability to shape water chemistry, but IMO, filter for chlorine, and then let it ride.
Joe