I'm not sure why some have issues keeping FC up with their SWG? We have an IC40 on our 26000 gallon pool and it will keep FC at 8+ while only being on the 3rd setting. Turn it all the way up and it will stay over 10ppm. Makes me wonder if people's salt level is on the lower side or the SWG need a good acid soaking. Or maybe people are not running it long enough? We run ours at 2000rpm 24/7. We absolutely hate a dirty pool and if we don't run it all the time we go to get in and the water surface is full of pollen and bugs so we keep it running at a low setting 24/7 and our FC stays up and the water is always clean. It's using less energy at 2000rpm than my PC uses. I will gladly pay a little more for electricity to keep the pool spotless. Actually I was in last night (super hot here right now) to test out the lights. The lights attract a ton of beetles!
Intellibrite 5g led pool lights by pentair. - YouTube
My pump's been running 24/7 and posted results are based on a brand new IC60 less than a week old set at 80%. I guess I could check the salt.
The SWG is installed horizontally. I wonder...