Most manufactures of SWGs recommend a CYA of 60-80 and CL 1-3 PPM. You might want to check your manual.

Also, there have been many post of CYA and SWGs which you may want to read. Some, including myself, believe that higher chlorine levels are not necessary with CYA between 60-80 because of the high chlorine levels in the cell. Currently, my CYA is about 70 and chlorine is 2.0 and I have yet to have any problems. Check out this thread:

http://www.poolforum.com/pf2/showthread.php?t=3185

We recently had a pool party of 16 teenagers. Although the pool was cloudy that night, the next day it was clear as can be.