I found an online seller that appears to have a great price on the 20K system with a 15-cell, which is the largest they make. Their 40K system also comes with the 15-cell; however, there is a $150 price difference.
So what wouldn't the smaller controller have that the larger would? My pool is only approximately 15K gallons, and I've read that I want to oversize my SWG. But obviously, I want to use my money wisely! If they both come with the larger 15-cell, why should I invest the extra $150? It's the cell that's creates the chlorine, correct?
Thank you for your time and assistance!