salt in my hot tub

[jamter]

I have 370 gallon Hot Tub and want to use salt instead of bromine.
can someone tell me how much and how often to treat it? Is there a particular type of salt I should be using? are there alternatives?
thanks!

 

[JasonLion]

Welcome to TFP!

Salt is not a sanitizer. When people talk about salt pools or spas they are talking about using a salt water chlorine/bromine generator (SWG). See for example this one.

 

[ericw2000]

Salt is not a sanitizer. When people talk about salt pools or spas they are talking about using a salt water chlorine/bromine generator (SWG). See for example this one.

I looked over the information on the autopilot website, and I don't see the advantage. You buy an >$400 sanitation system, and they recommend you add a "power pack" before and after each use. The power packs available for sale on the website come out to $1.51 per power pack, so you'd spend $3.02 each time you use your spa. Am I missing something?

I think I'll stick to my bleach.

 

[JasonLion]

For an outdoor pool a SWG works really well. But for a spa the advantages are not as clear. Sanitizer demand is highly variable in a spa, which is not as good a fit with SWG. SWGs are designed to produce sanitizer slowly and steadily at a constant rate.