First, thanks for a great resource.

With only partial success, I followed the instructions given in a 2006 thread regarding repeated shocking and brushing until chlorine levels is stable for 24 hours. Achieved some positive effects in that my water is crystal clear and algae begins growing only after about 5 days. However, i never achieved a 24-hour stability. After 10 days (and 10 gallons of bleach) my generator was able to maintain chlorine levels for about 2 weeks. But, now the chlorine is once again disappearing as fast as the generator produces it.

Obviously i need to go back to shocking and brushing but I realize that I cannot trust the water tests from my local pool store. Different clerks give different readings every time. The thread mentioned you sell a complete water test kit, TF1100 (I believe), but i could not find where or how to order it. Please advise or send a link to do so. Until i have consistent readings i don't believe I'll ever fix this problem. Thanks much.

background:
20,000 gal in-ground, vinyl pool
Installed my 1st generator along with a new lining in February this year

Regards,

Coman