Just wanted to comment on I love reading these in depth replies and continued education! I agree with Joyful Noise you are a great writer.I'd be curious to learn more about that claim, and who made it. Has anyone with any sort of gunk on their tile seen that gunk reduce after the start of using a robot? That'd be the only valuable input. I've never owned a robot, so my thoughts on the subject are merely conjecture. I would expect, at best, the function would be like flossing your teeth. You're never going to remove built up plaque by flossing, but "4 out of 5 dentists agree" that by flossing you inhibit the build up, sort of nipping it in the bud. Maybe robots can do that? I wonder if there is any definitive research, as in actual controlled testing, to prove the brushing by a robot is effective, bottom, sides, tile, etc, in any way. Or is it merely sales hype by robot manufacturers... and robot owners that want to justify their purchase. There's probably some of the latter going on with proponents of any type of pool cleaner, myself included. We all tend to praise what we own!
In reference to the cleaner: we were supposed to get a Hayward sweeper with a new build (8/2021) but saw a rebel was delievered. We kept it and it has done a good job for 48' long pool. Sometimes there are bugs on the bottom of the shallow so we realized the tires were worn out and purchased these replacement tires https://www.amazon.com/ATIE-Replacement-Pentair-Warrior-Cleaner/dp/B08X9QBX7V for $18! and nice improvement. The tires should not have worn out so easily but $18 replacement of better tires was a very simple fix.
We also were very careful about the landscape planning to remove as much debris as possible from entering the pool. We removed several trees and majorly reduced bulk from those we kept. Our only real debris is the few bees and other bugs that fall in the water or land on our cover. I save those that fall in if I am actively near the pool or swimming. I use a tiny $10 shrimp net and have one at each end of the pool and have saved many little insects lives (https://www.amazon.com/Extendable-A...1_8?keywords=shrimp+net&qid=1660341460&sr=8-8).
Off to swim, maybe save a few bees, and enjoy my free redo of the interior finish with no pigment dyes to fade and the upgraded quality install (Pebble Tech Arctic White with Blue Luminous Glass Beads 6/2022) compared to the first installation 8/2021. Glad my builder has integrity and stands behind his promises. Ellen M