After finding that the biguanide level (14) was lower than the test strips test (no big surprise) - I decided to convert without draining the pool. I balanced the pH and TA then vacuumed. After adding 4 gallons of 10% bleach over several hours and several FC tests, I measured little to no FC. After 6 gallons (total), it started to rise. It hit 15 ppm FC after 8 gallons. Two more gallons were required to maintain approx 15 ppm over the next few hours. I did see a cloudy green at first that turned to gray. I could not longer see the bottom for some time. Overnight the FC dropped only slightly (2-3 ppm). This morning, I can see the bottom of the pool again but it is far from clear. Backwashing gives me a good bit of brown/pink color in the discharge hose.
Those of you with experience with this conversion -does it sound like things are going according to plan? I expect that I still have quite a few day left in this process. Am I missing anything?