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On 7/24 TA 110, looking for 120 So I added 4LBS TA up at 10am, ran pool 32 hours and tested TA was still 110 Pool calculator said to add 4 lbs again so I added 4 lbs on 7/25, ran pool overnight again and tested 10am TA 120!! 8/27 TA 120 Perfect!! Right? It rained from 8/28 to 8/29 and now I...

Okay so I passed my OCLT sometime last week and I have been watching my FC level going down from a shock of FC 31 to today of FC 9, Pool Calculator says it be FC 6-11, should I try for the FC 6 or 11? or maybe try to hold at the middle @ FC 9? What do you guy's suggest? :?:

So the CYA chart of 70-80 = shock FC 28-31, are these unsafe levels for swimming? Do we have to wait until we are down to FC 9 again?

Well I just used our new T100 kit and I must admit I am a bit overwhelmed :? It all seemed easy reading before I did the testing :roll: Please tell me What you all think. We use dichloro & trichloro FC=.25 CC=.1 TC=.35? I believe? / .25+.1=.35? is that how it is done? PH= 6.8 TA=100...

Hello everyone, I am new and have had a pool for a long time. I just found this site and joined :wave: Here is a picture of our 35 year old pool....