Jwalker678

I have a Hot Springs spa. I believe it is 450 gal. I hardly used it the past 12 months. I just drained, cleaned and replaced the water. I intend to use it more often but probably will average no more than once or twice per week and then it is usually just me. I ordered some 1" chlorine tabs and a floater/dispenser. How much/often should I tend the chlorine? What is the minimum I need to do to maintain water balance?