I've hit it with a steady dose of bleach starting at 7:00 Pm sunday night. After adding 18 gallons of 6% bleach the chlorine level has risen from below .5 up to above 20. I'm using a hth 6-way tester & the dilution method to test the levels as my K-2006 has yet to arrive. If I understand correctly this evening I need to test the levels again, brush and then vacuum the pool. Am I to assume that it is best to vacuum to wasted at this point. Once again thanks for all the information.