Hi can anyone help
We have a salt water spa that is only 6 months old, the water chemestry is fine PH 7.5, Low cal, Free clorne is on the low side Alcalinity is good but we have a brown rust like stain on the stainless jet trim this can be cleaned of with metal polish with no sign of corrosion on the trim after cleaning
between the trim and plastic jet the staining is worse, there is also some jet black soot like staining on the satinless screws holding the back plate over the massage jet. we tried a common rust removal chemical and it had no effect.
The spa water looks a blue green colour but it difficult to say if this is real or just the effect from the sun and sky
It looks like some form of electro plating on the stainless trim
Any ideas