Do #1 & #2.

Go ahead and use the CuLator units -- it won't hurt them to do so, as long as they don't get goo-ey. Plus they act very slowly, so the more they are in the pool, the better.

Let's stick with that for the next week at least. Don't over-test CYA; you'll run out of reagent. Let me know if you see any staining occurring.

I'll try to get your pics posted tomorrow.