After lurking for some time, and learning a great deal, I discovered why my chlorine levels were so high, and my water still green. Of course, my local pool store said "add algecide" and more tabs in the feeder.
Long story short, I drained the pool, and started from scratch. Everything is now right, except possibly CYA. The Pool Calculator says 5 pounds of stabilizer should yield 50ppm in 12460 gallons. When the pool store tests the water, they say 90ppm.
Who should I believe? I have not yet invested in a "real" test kit. Soon.
Thanks to all the posters here that have taught me so much...
CH 165 target 300
CYA 50 or 90 ??