My FC dropped by two for the second night in a row so I guess I'm back to trying to keep the level up in the hot sun today and hope it holds tonight. Just a question....I am sort of lazy on the weekends so I got up before dawn to get the water sample in a plastic bottle and then tested it later. Could I be losing some chlorine in the water bottle? I got the same reading about 9:30 after the sun had been up for several hours. Just wondering how long can this go on before the organics are gone? The pool looks better than it has in a week or two so it's really tempting to call it good and turn the SWG back on Off to Sams for more bleach