Thank you both for responding. Being so new to this stuff I really can't tell you what that stuff was floating around but there was a TON of it. Small tissue white looking stuff. That's how I describe it. I don't see it anymore however I don't see much anyway because it's so cloudy.

The Chlor Brite Step 2 Sanitizer is from Leslie's. The Active Ingredients is listed as:

Sodium dichloro-s-triazinetrione dihydrate = 99%
Other Ingredients = 1%
Total = 100%
Available Chlorine = 55%

I put one of those in the other day when I opened the pool. Outside of that it's only been the 3-gallons of bleach. If I want to get this size pool up to 20ppms any idea how much bleach I'll need? Part of my issue is calculating what is needed. I've read about people putting 10-20 gallons of bleach in so I'm just trying to gauge what I need to buy today.

Thanks again!
-Brian