Thanks for the link. I hadn’t thought about it until last week when I ordered 100 packets from ebay for my husband to use in his drip lines. He had been getting a solution in 55 gallon barrels that cost an arm and a leg and I suggested using the pool shock and it works great, is easier to handle and is much cheaper.
Not all pool shock has calcium hypochlorite as an ingredient. Also, don’t use any that has an algaecide in it.