How long does a bottle of SpaBalancer last in a hot tub with 2500 liters?

"I'm interested in your remedy, which would interest me how long does a bottle last on a hot tub with 2500 liters of water?"

The size of the hot tub does not play a role in the weekly addition. Only when you fill it for the first time, you need to add 125 ml of SpaBalancer for every 1,000 liters of water.

That would be 300 ml in your case. However, you can keep the water in the spa for at least a year. After that, you can add between 50 ml and 75 ml per week. This depends on how often you use the hot tub and whether you get in the water showered or unshowered.

The more debris in the water, the more SpaBalancer is needed. So it makes a big difference whether you're in the spa three times a week or six. Typically, between three and five bottles are used per year.