Nfish, I did the same thing. I couldn't believe it worked myself (since one petsmart denied me b/c it was an internet deal). Though I just moved on 10 minutes to the next petsmart and they felt like being nice. However, that manager also told me they won't do it again b/c it was an internet deal.
I rinsed my fluorite over a window screen that was placed over a bucket. Like Buck said, until it runs clear.