1. Yes, only on my stairs though. The liner seems to be clean to this point. I really hope it doesn't come back like last time. Literally stains 85% of my liner.
2. The Cal Hypo is sold at a local pool store and costs $50 for 12 bags. At this rate, I figure I'll be spending $100/month to keep chlorine in the pool.
3. No Sams club. Will most likely order Dichlor from Amazon.
For now I just have 10% liquid chlorine and was planning on using that until I get something else. Thanks.