Well just my newbie 2 cents.

I found out that in Florida they sell liquid chlorine (BLEACH) for $4.49 for 2.5 gallons. It's 10.8 percent.

Now today I find out that once every 6 - 8 weeks they have a buy 2 get 1 free. So now you are getting 7.5 gallons for under $10 - now thats not all the time but if you factor it in long term it appears to really bring down numbers.

Plus they give you the 11th fill free - and (on top of it) wednesday they give you 2 "credits" for liquid chlorine.

I asked how "fresh" it is. They told me they get 15 thousand gallons every Thursday and use every bit of it up. THey said after 30 days it loses about 10 -15 % potentcy and gets worse as time goes on..

So today I bought 2 gallons - got 1 free but I got 6 "credits" so 4 more buys and I get one more free.

Again, I dont know where you live or what is available. But doing rough math in my head with the price, bonuses, and buy 10 get 1 free: Planning my purchases on Wednesday and all that - it really works out to be a bargain.

And you are getting straight up liquid chlorine and you don't have to worry about CYA.

I am a TOTAL newbie. My pool has been running for about 24 hours now -- so I am just sharing what i've learned thus far...