I wouldn't run a spa without a good kit either, especially one connected to my pool. Assuming you'll use the hot tub over the winter of course. I like what Anona said, sounds like a good plan. If you close the pool, the SWG will be off and you'll have to chlorinate the hot tub manually regardless.
Just sayin... A kit will save you time and $. Knowing what's going on with the water whenever you want to know takes the guesswork out of... guessing everything. If you're not on the west coast, you'll receive it via fed ex ground in less than a week.
Just sayin... A kit will save you time and $. Knowing what's going on with the water whenever you want to know takes the guesswork out of... guessing everything. If you're not on the west coast, you'll receive it via fed ex ground in less than a week.