At last! Pool is finished and filled with 25KG clean city water. PH is 7.0, TA and CH are both 330 (very hard water!) Pool is tiled with ceramics. I'm planning on using liquid chlorine. What's the very first step? Should I raise PH to 7.5 BEFORE putting in the chlorine? If yes, then how? borax? I really don't want to add un-necessary stuff. And what about the TA? Should I lower it also before the chlorine? Or should I just start with chlorine for couple of days, then test and see. Thanks for the site and answers!