I made a trip to our locally owned pool store to get some bleach. I sometimes take a water sample out of curiosity. The owner and his wife are the only one who tests the samples so they are pretty consistent with my k-2006. Today when I walked in I heard the owner talking to a bunch of people standing around the counter "With this crazy hot weather everyone's test results are out of wack, except that guy", pointing to me. Then he says, " his test results are alway perfect and he never listens to a thing I tell him to do". I just shruged my shoulders, said "I hate pucks", gave him my water sample and then he handed back my perfect results.