Any tips on where to buy the cheapest pure boric acid? I am weighing my options on whether to go the boric acid or the borax/MA route. I have a 28K pool and the calculator said 1) 67 pounds of boric acid or 2) 22 76oz boxes of borax and 6 gallons of MA. Does this sound right? My current borate level is 0 and wanted to go to the recommended 50. Also, should I buy some extra to keep around? How is the shelf life?
Last Question - What is the recommended way to add borax or boric acid to the pool?
Thanks in advance for any advice!