"Marketing" -- the American way of lying professionally, outside the court room.
By the way, your PF is 184 . . . so 1# of stabilizer will give you a CYA level of 184, AND 1 gallon of plain 6% household bleach will add about 90 ppm of chlorine to your pool.
So, 1/2 cup of bleach (4 fl oz) will give you a chlorine dose of about 3 ppm.
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