I currently have to add water with a hose and it’s a pain in the rear during Arizona summers.
There are auto-fillers, and then there are auto-levelers. Does your pool have any sort of overflow control? A hole in the tile or skimmer that will drain the pool if it gets too full? If not, consider an auto-
leveling system.
I have a Poolmiser (
poolmiser.com). It has a float valve for filling, and a standpipe for draining. Both can be adjusted, such that the water level, and the level at which the pool will start draining, are independent and adjustable. The Poolmiser components are mounted in a PVC well (similar to a skimmer well) and connect to the pool via an equalizer tube. It sounds like you're already installing one, so that's halfway there. The PoolMiser well can be up to 30' away from the pool, so you wouldn't need to tear up your deck to install it near the pool water. The Poolmiser needs both a water supply and a pipe for draining, off to some part of your property that can handle pool water overflow. And I believe there are other brands of similar systems. They're not terribly expensive, and being able to stay cozy in bed in the middle of the night, instead of having to get up to drain your pool in the pouring rain, will make for an instant ROI.
The potential downside of such a system is that if the float valve gets stuck in the on position, the level will rise and the auto-draining feature will happily dump that extra water. Theoretically, this could run for weeks without notice, or until your water bill shows up. It'd be rare, but it can happen. I have my drain level quite a bit higher than my fill level, so if the float valve fails open, the raised water level is very obvious. And I can keep an eye on my water level, and the end of the drain pipe, with my pool cam, so unless I ignore my pool for weeks at a time, I've solved for this possibility.
Something to think about, anyway. I wouldn't own a pool without an auto-leveler, especially in our climate.
Yikes.