Thanks again, Waterbear.

I'll wait until the end of this week when I can post side-by-side test results from the two pool companies I've been using, plus I'll use my new K-2006 kit to give you its results, too. I'm comparing everyone's test results right now before I figure out what I'll do on an ongoing basis with regards to water testing by the pool stores (I need to do that to keep the warranty on my Diamond Brite interior). Until then, though, I'll give you some info from this weekend's readings using my K-2006.

I can tell you that the SWCG is able to boost the FC from 1.5 (yesterday morning) to 12.5 (this Monday morning) in 24 hours. And whatever trace of CC I had (during yesterday's test, the pink color for the CC test would disappear after adding just 1 drop of reagent, so I supposed the CC level was 0.5 or less), is now almost entirely gone (eg, during this morning's test, I hardly can detect any pink color at all for the CC test, but it does get very faintly more clear after adding 1 drop of reagent). Based upon my math above, I would have predicted that the FC level would have reached about 10.5 (though I rounded the liters in my pool up a little, so perhaps that accounted for some of my error. (Note: I was testing using 0.5 increments, not 0.2 increments).

Other tests from my K-2006:

TA - 80 PPM (I subsequently added 4lbs of baking soda afterwards, which should have boosted it up to about 100 PPM)
CYA - 60 PPM
pH - ranges from 7.2 to 7.8; seems happiest at 7.6. I add acid when it reaches 7.8, which lowers it to 7.2 or 7.4. This morning's reading was 7.8, so I added 4 cups of acid.

Calcium Hardness doesn't seem to be an issue -- both pool companies say I'm fine, reading between 300 and 375 depending on the week.

I am pleased that I'm getting feedback from other people who note how crystal clear our pool water is, as compared to others' pools. I attribute a lot of that to our DE filter (my buddy who supervises the City of Fort Lauderdale's public pools urged me to get a DE filter for it water-clarity benefits), but I'm sure the right pool chemicals have a lot to do with that, too. In the sunshine, the water just glistens like an aquamarine jewel. It's just gorgeous.