D
Dotty
It's not water treatment. If you store water below 60°c you exponentially increase the risk of developing legionella contagions.
Store the water at 60°c or above. Provide a thermostatic mixer valve at each spa to give you your 36° or whatever it is you want.
Store the water at 60°c or above. Provide a thermostatic mixer valve at each spa to give you your 36° or whatever it is you want.