I just bought a new house that came with a pool and SWG (I'm new to both). Everything is great I'm just not sure if it's normal that the SWG runs for lets say 30mins and goes from 3.55 and -3100 to 0.00 and -0. I have it sat to 30% so is this just a normal on/off cycle? I just assumed it produced at 30% all the time not turns on and off. Hopefully this question is clear enough.