Kurt (and PoolDoc),
Thanks for the informative post. My initial motivation for wanting to know about the 5-gallon carboys had more to do with convenience (I hate running to the grocery store/Target, etc for bleach) than cost. However, I thought that increased savings would be great, but I see that there isn't much savings to be had. In addition, I was a little worried about storage of such a large amount of (maybe) stronger bleach and it appears I had every right to be!

While reading PoolDoc's post I finally realized that I should take advantage of my grocery delivery service and use it for ordering my bleach. Why didn't I think of that sooner??

Erica