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We lost only ~0.5 ppm last night, with trace CC and a clear pool. So, yay. The test was not planned--I had added enough Cl through the day to keep up with UV (and wind) losses. So, I didn't need to add after measuring last night. And the night was calm, with little influx of organics. We'll...

It's now two mornings in a row, waking up at or very near SLAM levels. We've lost some overnight, but can only estimate based on the last addition, since we haven't formally tried the test yet. My wife has a new reason to stay at SLAM levels. Apparently mosquitoes can't taste chlorine...

We've kept it at 20+ (targeting 27 with each addition, with SLAM level of 24) last night, and overnight, and every 3 hours today. Given how hard it was to get here, and how easy it is to stay here, we're just going to hang at this level for a bit. Our previous blind spot was the overflow -- not...

Quick update Saturday: needed 90% of shock level added again last night at 10:20. My wife got up to add 80% of shock level without a measurement, since it has been losing 90% in an hour. It was at 1 ppm FC at 7 AM; I added 25. Then, the pool turned a corner. 10.5 FC at 8 AM; I topped it off...

I had seriously considered #1. But on a septic system, with drainage to neighbors yards, a slow water replacement seems better. I'm not sure I can believe the magic number really matters much at this stage--70-80% of FC is lost in 30 minutes, it spend most of its time <5. But no matter, #2 is...

Here's the 'before' picture of my swamp. Last night, after >6 weeks without overnight chlorine survival, but before I realized the chlorine was not lasting an hour

I have been using the great info on this site to put together a plan to get my pool back (from nature, pool store chemicals, whatever). Doing what the pool installer/store said worked great, until it didn't. Now I have algae (finally!) and a chemistry that reflects things that I now know should...