Ben . . . my cl levels were low b/c I had to treat for metals. (see link http://www.poolforum.com/pf2/showthr...ea-Please-Help). I was slowly raising cl by adding a quart a day until my test kit arrived, whcih finally happeneded last monday. I have been trying, unsucessfully, to raise my cl levels by adding bleach and trichlor tabs via the inline chlorinator. However, I have not seen any rise in my FC or CC after adding doses ranging from 6-9 ppm of bleach. (I had been reluctant to add shock level doses to my pool based on the mbar's write-up concerning metal treatment until now) For example last night I added just over 4 gallons of bleach which should be a does of 11 ppm for my (25,550 gallon pool). When I tested the water this evening I still had basically undetectable cl levels.

Test results:

FC=.4
CC=.2
pH=7.1
TA= 90
CYA=60

Based on what I have read about chloramines it seems that my next step is to shock the pool. Using the "best guess chart" my dose should range somewhere between 20 and 75 ppm of cl. This is a pretty wide range. What is your reccomendation for raising my cl levels?

Thanks