TF100 new user - FC reads much lower than Pool Store
I am new to this site, great info. I have cloudy water. My test for FC using TF100 says about 1.5 and the pool store says 12. What am I doing wrong? I have used more DPD Power for test and got the same results. On the OTO test I can see it is over 5. Help plz.
I am new to this site, great info. I have cloudy water. My test for FC using TF100 says about 1.5 and the pool store says 12. What am I doing wrong? I have used more DPD Power for test and got the same results. On the OTO test I can see it is over 5. Help plz.