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I have read all this talk about putting CYA in a sock, but what is the big disadvantage of just sprinkling the granules in the pool and brushing it around? Will it discolor plaster (PebbleTec)? Hope this isn't too much of a newbie question.

Hello everyone. We opened our new pool a couple of months ago and I have been learning as much as I can on this site. Thanks to you all for the great information. I bought the TFT100 test kit and my numbers look pretty good, except the Ph keeps drifting up, which from reading is normal for a...