Spot free rinse air bubbles

[CDH]

I've owned a carwash for 12 years and have never seen this problem before. When using spot free rinse air bubbles appear on vehicle, not soap bubbles, air bubbles. I lease my water softener system so I started there, they came and tested the water and inspected their equipment, everything was ok on there end. Anyone ever come across this issue?

 

[MEP001]

Yes, if the RO quality is exceptionally low TDS it will look bubbly on well-waxed paint.

 

[traveler17]

I've owned a carwash for 12 years and have never seen this problem before. When using spot free rinse air bubbles appear on vehicle, not soap bubbles, air bubbles. I lease my water softener system so I started there, they came and tested the water and inspected their equipment, everything was ok on there end. Anyone ever come across this issue?

I experienced the exact same thing. I changed check valves because I swore it was soap. What MEP said. RO quality not what it should be