hi new to the spa thing, aquirred a 93 cal spa for free and rebuilt framing and siding, filled with h2o, and up and running after small heater gasket leak. wondering what the basic chemicals i need to get the water to where it needs to be. if some some could give me some insight as what i need to buy that would be great. have spa store close by just dont want to be sold chem i dont need oh yeah im on standard city water thanks

by now you might have already gotten your chemicals, but the simple answer is "it depends on your water". You may need ph up, ph down, or both. I use muratic acid for my ph down since that is the only way i ever need to adjust my ph. Chlorine is my sanitizer of choice. So, in my situation I only use ph down and chlorine. I never need to adjust my hardness so I don't need the hardness adjusting chems. It all really depends on your water. I too am on city water, but it's different from tower to tower, and city well to city well. Just a half mile away I have another residence with a tub that is on a different tower/city well and they have to use ph up constantly and hardness increaser.