Took a sample to Leslie's this afternoon. CYA read 90. This was after I drained about six inches of water yesterday and refilled. My chlorine was down to the 16 to twenty range also. This was with my test using the dilution method. Actually I ran it with a 1 to 5 ratio and it appeared to read about 4. Not very accurate but that is as close as I can get. I guess I am going to let the chlorine slowly decrease now and see where I stand. My concern is that the SWCG will not be able to keep the chlorine in the 5 to 10 range as you recommended. If that is the case, I guess I will continue to supplement, with cal hypo this time, until I can drain more water and refill to get the cya down further. Thanks, Carl, for all your help. I should have known better. I sort of blame Leslies for the incident because their guy acted like I was crazy to use bleach several days ago. He said since it was only 8.25 percent bleach that it was 91.75 percent something else and that was bad for the pool. That caused me to decide I would use some shock with the bleach. Also the heaviness and difficulties transporting the bleach added to this flawed response. As much as I have read on this forum, I really should have known better. Thanks again!
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