Wouldn't your calculated run time probably be around 50% of what your pump run time is? Especially if you're over-sizing the unit for your pool size? So if you're running your pump for 8 hours per day the SWCG run time would be about 4 hours. Those of you that have had your units installed for a few years, what % do you typically have it set at and are you oversized for your pool size?
I run a compupool cpsc48 made for a 60,000 pool. I run the pump about 7 hrs a day with the cell set at 40%- 50% FC stays at 7. Pool is 24,000 gallons and full sunlight. I have run the cpsc48 for 1 season and really like it. I paid about $700 and got it from ebay with free shipping. I run the swg off the pump timer so if the pump runs so does the swg, but I have the option to use the swg timer if I want.