Thanks for the input. In the past I’ve superchlorinated and got the pH into good range, then went back home and monitored it with my pHin. It showed that pH drifted up each time the jets turned on, so it got to a bad range after about a week. The ORP went down to what the pHin calls “yellow” range after a week also and leveled out there. At this point I’m assuming there was no chlorine left at all and the system was relying exclusively on the ozonator that runs 24/7. I left it like this for 6 weeks, and when I returned I expected to find the water green, cloudy and smelly, but it was crystal clear and smelled fine. When I added a bit of pH down and chlorine/shock, it seemed to be just fine.
My question is, by getting the chlorine back into range when I arrived, and since the water was crystal clear, does that mean it’s safe to get in? Is there some reason I shouldn’t trust the water? Is it not safe even though it’s clear, doesn’t smell and is now perfectly balanced? Or, if I can keep repeating this, is this an acceptable way to maintain the water while I’m gone?