Quote Originally Posted by Mickie513
The 10 or 12% in the liquid shock from the pool store is less stable and will lose its potency faster than the 6% bleach from the grocery store.
This is a good point.
I stopped using the large 5 gallon shock the pools stores were selling because a) they were too hard to handle (vs bleach), and b) the stores hours (& location) weren't convient for me.

Anyone have an opinion about the 10-12% pool cholorine sold by the case (4x1 gallon jugs)?
In Minneapolis I get this a Mill's Fleet farm, usually $9.49-$11 per case. I feel I get decent results from this (even if I get 3 cases to use over a 4-6 week period), and its less jugs to deal with than store bleach.