SilkBalance is the only way to go. When I purchased my spa from Bullfrog Spas of Ogden I had two options for my spa. One looked like a chemistry set and the other was two bottles. The SilkBalance is the best and easiest way to maintain your spa all year long and the best part is you don’t get the chemical feel or smell which is awesome. Bullfrog Spas and SilkBalance are the perfect combination and help us enjoy our spa.