Buy Baking Soda at Wal Mart or Sam's in the 12 lb. re-sealable bags at around $5 is about the best deal I've seen. Borax can also be found at Wal Mart or the Grocery Store. Calcium Chloride can be found at some Hardware Stores but It seems to me around here, the best price is actually at the pool store.Originally Posted by msb1766
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