I might have found a good source of 12.5% bleach in my area. It comes out to about $4.20/gallon (about .26/oz of chlorine). I say "might" because I'm not sure if it's fully 12.5%. I purchased 16 gallons 4 days ago. They are in my garage stored in white gallon jugs, enclosed in a yellow plastic case, and away from direct sunlight. The caps are tight.
Question: I poured some into the pool this evening and smelled the bottle before doing so. It hardly smelled at all - it was almost odorless. It is Hasa Sodium Hypochlorite and I buy it from a middle-man. Should I be concerned that it is nearly odorless?