Can someone explain exactly what Baqua is? I always though it was simply a name brand. I have used Baqaucil products last year, such as their Total Alkalinity and calcium hardness before finding the TFP method. Or is Baqua a different method of sanitizing your pool without chlorine? I'm only asking because this is my first year doing TFP method, and I also did not change out my sand. However, it was changed last year while I was using dichlor pucks.