This might be caused by over inflation, chemicals misusage and lying under direct sun shine for a long time. If your MSpa bladder is experiencing bulging we suggest the following troubleshooting steps:
Check if Bladder is Over Inflated
Deflate the bladder slightly in order to restore it to the correct level. Similar to your inflatable liner the air inside the bladder will fluctuate depending on the ambient air temperature.
Please note the air will expand during warm weather and decrease during cold nights.
Check if Bladder has become Deformed in a Particular Area
On occasion, the internal welds can separate. This may cause the bladder to become deformed or balloon in a particular area. If this is the case under warranty please contact our local service site and they may provide some further assistance.