I don't know if I want to live a million years with my pool and filter--but I sure would like the opportunity to choose!

Seriously, I have found that using DE in my sand filter, along with skimmer socks in my...skimmer, a solar cover when the pool is not in use, and, finally, the water-polishing effect of a robotic cleaner leaves my water absolutely sparkling. I don't know if Zeo would do any better. I've not seen a Zeo pool.