Reviews of Bioguard swimming pool chemicals?

[CarlD]

Actually, according to this MSDS, Balance Pak 300 is calcium chloride, not calcium carbonate (which does not dissolve very quickly except in acid). It's the same as Peladow (90% calcium chloride) and similar to Dowflake (68% calcium chloride).

Thanks for the correction, Richard.

Of course, the point is they are selling very ordinary chemicals at 3x or 4x what you can buy them at when you go to the supermarket or CostCo. Even the fanciest market in my town sells both borax and washing soda for about $1/lb.