A sequestering agent is used to treat water hardness. This treatment will suspend calcium and heavy metals from your hot tub water, which is crucial to maintaining healthy water and preventing damage to your hot tub. Without these treatments, your hot tub will suffer from poor filtration, poor sanitation, increased scale deposits, cloudy water, and possible corrosion.
While the amount you use your hot tub will play a factor in how much chemicals you need, on average you can expect to spend around $25 a month on chemicals for your tub if you’re using it moderately.
Just like pools, hot tubs require filters to help keep the water clean. Over time, these filters will become dirty and need to be replaced. Clean filters allow your pumps to work at optimum efficiency, which saves energy, it also helps to keep the water in your tub healthy.
In general, you should replace your filter every 3 to 4 months. You should clean your filter every two weeks. We also recommend that you should be rinsing your filter twice a week for proper maintenance. Hot Tub filters vary widely in price depending on the kind of filter your tub uses and the brand you purchase as well as from where you purchase it. On average, a filter will run around $40.