Each gallon of 8% bleach contains about 0.7 lbs of chlorine gas equivalent. (8.5 lbs/gal x 0.08 = 0.68) Your PF (pool factor) is 5, so each gallon will be 0.7 x 5 or 3.5 ppm. Figure 3 ppm, since most 'gallons' are now 121 fl. oz instead of 128.

But, once you get your K2006, watch the Taylor vids (http://pool9.net/tk-guide/), then test the pool, then post your results. If your CYA is low (stabilizer) and you have access to a Sams Club, dichlor from Sams may be your best bet. But, we need test results.

(Can you check your pump ID? I can't find a SP1510. The Hayward Power Flo Matrix pumps seem to be SP159x series.)