homespaguy Posted January 10, 2022 Report Share Posted January 10, 2022 When I moved into my house in 2005 it had a dis-used 6 person Jem spa. I had no experience with spas at that time. I got it going and the lady at the store recommended spa chlorine and shock. So for 16 years I used 1.5 TBS shock and 1.5 TBS chlorine each week on Sunday. Each time I got out I used 1/2 TBS Chlorine except on Monday I used none. Water changes every 6-8 weeks. This worked well for a very long time. This Fall I took a sample to the pool store and she recommended that I back off a little on the weekly shock chlorine to 1 TBS instead of 1.5 TBS (leaving shock at 1.5 TBS). So I did that. Then the controller died and I got a new-to-me smaller spa. It is a 3 person. After startup and getting the chlorine level up, I am wondering about thoughts on daily and weekly dosing. I will of course monitor chemistry, but what would likely do? Maybe 1/3 TBS Chlorine each time and for weekly shock maybe 1 TBS shock and 3/4 TBS Chlorine? It is only me 99% of time. I use the spa usually 6 days a week from October to May. I have not had an ozonator but the new spa has one that is disconnected-probably dead-perhaps I will replace it? So the question is this: 2/3 the water volume is 2/3 the chemicals or not? Quote Link to comment Share on other sites More sharing options...
dashmer Posted January 11, 2022 Report Share Posted January 11, 2022 2/3 of the chemicals make sense for certain things, like balancing and initial sanitizer and shocking, but treating for bather load will be the same. Use the pool calculator with your new tubs parameters for accurate dosing. Quote Link to comment Share on other sites More sharing options...
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