im sorry guys i failed to mention in my haste this was a combination of reagent test and a "just to see test " from ace hardware. i would like to say that i found out first hand what has been said on this forum about in store water testing. brought a water sample to ace this morning and the first time the printout said i had NOTHING IN MY POOL. and i said to the guy" WWWHHHHAAATTT!!! " so after a retest it showed this FC-.6, TC-.9 , CC-.3 , PH-7.5 , hardness-133, TA-71, CyA-4. went back to town and retested again FC-6.1,TC-6.5,CC-0.4, PH-7.3,HARDNESS-166,ALKALINITY-75 , CYA-61. JUST GOES TO SHOW JUST BECAUSE ITS TESTED WITH IN STORE EQUIPMENT DOESNT MEAN ITS RIGHT!