Check the date code on any liquid chlorine. You want fresh chlorine preferably bottled within the last 3 months. Liquid chlorine strength
breaks down with time and temperature.
Nationwide
Use their websites to check for availability in stores around you:
- Home Depot - HDX 128oz Chlorinating Liquid 3 Pack
- Wal-Mart - Pool Essentials Chlorinating Liquid 2 Pack
Texas
Houston Area
- Napco Chemical Company - They sell 12% in refillable containers and they sell the containers.
