We have a 30k gal pool in PA with a SWG system. Last year after opening we noticed scaling. I didn't check Ph during the winter and was told with a warm winter there is more scaling. I treated in the fall with Jack's magic and that seemed to do the trick. Pool guy opened it this year and have some scaling on steps but I kept adding acid all winter as Ph kept climbing and used a pump to circulate the water. He recommends now not using the SWG saying they see more problems and that the system is more for year round pools in the south. Is that true? Whould I go off SWG and use BBB method myself? Maintaining by adding acid regularly isn't that much of a bother or cost. Maintaining in winter is no fun but I heard at Leslies that even regular pools get scaling if Ph not checked and maintained over the winter. Thoughts? I am inclined to keep chlorinating with the SWG as it is cost effective and easier to maintain the pool.....