RLP, Thanks for the quick reply. Ya...I'm assuming +/- 0.5ppm with the 10ml test. Both the PM and AM tests followed the same progression from red to pink to almost clear to clear. So even if the value is off, I'm feeling confident that I don't have a algea problem. Just wanted to make sure my test results made sense.
Already tired of dumping liquid chlorine in the pool every night, and we take extended vacations multiple time thoughout the year. Asking neighbors to take daily care of the pool for two to thee weeks at a time is pushing it. So...after much research, I ordered the Hayward Aquarite with a T-15 cell, along with the parts necessary to wire and control it with a current sensor. This is the easy part. Electrical and Electronics are my forte. Basic chemistry I understand, but please don't ask me to balance equations. Pool pumping is simple, but I hate crawling under the kitchen sink.
I would like to thanks all those that have responded and contributed to this thread. The TFP site, and its members, have been an outstanding resource.