I'll see about finding a pool supply place around here for test strips (might not be easy). Or, I know a guy with a pool, maybe I can get some strips from him.

It hadn't occurred to me to use bleach for general purpose cleaning. I'm still wondering whether it goes stale. Yeah I can obviously buy more if needed.

I just missed out on a good Walgreen's sale, 1/2 liter bottles in 15-packs, three packs (45 bottles) for $8. The 12- and 15-packs are a really nice size, more manageable than 24-packs but fewer packages scattered around than 6-packs. Oh well, no big deal.