Received my TF100 Kit and ran a complete set of tests.
Time taken 1:30
Pool Temp 72 deg
Pool was drained and refilled in early 2013. Have been using primarily 3" tablets and Powdered Shock since then.
Will drain some of the pool water and replace, not sure I want to drain 86% like Pool Math suggests, but maybe 40-50% now and some more later. Will put the Multiport Valve on waste and let the pump drain the pool.
Any other recommendations?