I ntoiced my Walmart is now stocking large bags of Baking Soda in their pool supply section. And Arm and Hammer has some Backing Soda 3" Tabs they are selling there too. Evidently you use them in a feeder (separate from your Chlorine feeder) and they offset the PH drop from the Trichlor pucks. Looks like BBB is gaining mainstream attention.
Here is the large bag of baking soda: http://www.samsclub.com/sams/shop/produ ... rod1180321 it even has a picture of a pool on it.
And here are the tablets: http://instoresnow.walmart.com/enhanced ... 66544.aspx
Just thought I'd pass the info a long and see if anybody had seen either before.