OK. I seem to be running into a dead end on the fully automatic route.
Can anyone recommend a solid unit for this size pool?
I know it's generally a good idea to buy an oversized unit as you might get more life out of the cell with the lighter usage. However, it seems to me that you could go too far with this. If you're trying to keep the pool nice and stable, but you can't run much more than 10 or 20% without building and building chlorine, then it would be pretty difficult to make minor adjustments.
I run into this on a lighter scale with my Ecomatic ESC 36 for my 18,000 Gal pool. Sometimes 20% is not, quite enough, but 30% is just a hair too much.
However I do like the nearly 5 years that I've gotten out of the cell thus far!
But this is just my theory based on limited experience. I'd really like to hear some of your thoughts!