Belated welcome to the Swg club

As
@PoolStored mentioned, a cya of 60 is ok in the shoulder seasons but do not fear 70 or even 80 in the long dog days of your hot Texas summer

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When you notice that it’s not quite keeping up (maintaining at least target fc or a dab above) with your regular testing as the uv increases then that’s your cue to increase cya then dose with liquid chlorine & see how she maintains.
The 60 to 80 cya curve for a swg is No different than the 30 to 50 curve for manual chlorination- your starting point is just different. Lower cya in the shorter low uv days, higher cya in the longer high uv days.
The swg puts out a little fc continuously over a long period of time. You don’t want the sun consuming it as quickly is the cell makes it.
You never want fc to fall below minimum for your cya because of a high uv day & a higher cya (60-80) can help you prevent that.
Also, the more you protect the fc your cell produces, the less you have to run it to maintain proper fc levels thus the longer it will live. All Swg cells have a finite lifespan (usually around 8k -10k hrs @ 100%)