I haven't been out to get distilled water yet, so no pH test, but I was shocked by how clear (not sparkly, but still clear) my pool was this morning. I've been filtering for approx. 15hrs. Test results:

7/17/13 10:30am
*FC: 20.5
*CC: 0.5
*TA: 150
*CYA: 0

Maybe that *wasn't* algae...?