Went to BJ's to get a big bag of Arm & Hammer baking soda becuase I had a coupon and figured I'd be using enough of it this summer to justify buying it. Anyhow right on the bag is listed common uses and in the middle of them is "swimming pool".
Even Arm & Hammer agrees with using the BBB method :-D
Even Arm & Hammer agrees with using the BBB method :-D