Well, my CH is approaching 900 again. Warm temperatures and a lot of wind recently have evaporated it down. The weather forecast shows 20% chance of rain, at best, 8 days from now. I think I can rule out rainwater dilution for a while.
So, it's time for a partial drain and refill.
I noticed the kitchen drain was a little slow when I was using the disposal a few weeks ago, and a few months back we had to have the main line snaked out, so....
I pulled the cleanout plug behind the kitchen sink - the farthest point from the main drain line. I have a submersible pump flushing out my sewers now with pool water.A few thousand gallons ought to clean things out, don't you think?