Concentrated bleach will not cause that. I wonder if you accidentally used something with some scents, etc., in it by mistake? I buy the Walmart generic 8.25% all the time. In fact, it is the only thing I use. It does not cause foaming. (Maybe it was a type of algaecide you used instead that caused the foaming?? Some of them will do that.)

As far as Borax is concerned, it is 20 Mule Team Borax that we buy. All the Walmarts I have ever looked in have always had it in the laundry detergent aisle.

The kit you want is not available locally. It is the Taylor K2006 or 2006C. If you get it through this link http://pool9.net/test/, it earns the forum a small percentage which helps us keep the lights on. (Link takes you to our Amazon link. Any purchases made through that link, (and NOT just pool supplies), will earn a little to help us keep the forum alive.)