Yep, PHMB is the fancy name for Baquacil, aka Baquacrap. Pleeeeeease think carefully before you decide to use Baquacil. The sales pitch sounds so good..."gentle water"...."easy, once-a-week maintenance"...."no harsh chemicals"....it all sounds so great. But I can tell you, it's crap. The clearest our water ever got with Baquacil was "kinda, sorta clear". Usually it was cloudy in the deep end. And the money we spent. Good grief, hundreds of dollars just in the few months we used the stuff. Total scam.

We switched to Chlorine about mid-summer of the year that we built our pool. It was the best thing we ever did, and I kick myself for not starting out with chlorine in the first place. Our water is always crystal clear now, and I spend maybe 2-3 minutes a day on our pool -- no kidding.

Chlorine is CHEAP too. I use 6% ultra bleach from Walmart (it's chlorine only, no stabilizers or other gunk in it). I use perhaps 1 jug of chlorine per week, and I keep a tablet or two of Trichlor pucks in the floater. Throw in the Aquabot once a week to clean the pool for a few hours, and that's it. Very easy and simple.