The air naturally expands and contracts with variation of air temperature, thus causing variation of pressure, too. At higher air temperatures (on hot days) the air inside the spa wall expands and the pressure increases, whereas at lower air temperatures (on cold days or during night) the air inside the spa wall contracts and the pressure decreases giving a false impression that the spa tub or cover bladder has lost air. Do not over-inflate the spa tub and spa cover air bladder, and make sure the air valve is firmly secured and properly closed (consult manual for proper air valve operation). If the spa wall is very soft, add some air.
The wall of my spa tub becomes soft after 5-7 days of being inflated. What should I do?
