Drew,
The whole point of having a SWCG is so you can go on vacation or slack off from time to time. Really, if you, or anyone else, gets algae, it is simply because the FC was not kept high enough.
Not sure it applies in your case, but I see this all the time. The pool owner tries to keep their FC
between the minimum and their target. Doing this requires the pool owner to be on top of everything all the time. Call me lazy, but for me, this is way too much effort..
I recommend that you set your SWCG to keep your FC at
or above your target. And look at your minimum as a cliff that you never want to fall off, so you stay well away from it.
I only worry if my FC drops below my target. Normally this means if we have a cloudy day my FC will go up, I don't care as it will just come down a little on sunny days.
Stuff falling into your pool just does not cause algae. Rain storms do not cause algae. Keeping your FC too low will cause algae.
I have three saltwater pool that in total have been saltwater pools for almost 25 years. I have never once gotten algae. All three pools still have their original water. I am often not able to answer SLAM questions as I have never actually done one..
In my mind you are trying to run your FC to close to the cliff.
That said, we have a few members that use the ORP system and maybe we can get some of them to chime in..
Thanks,
Jim R.