Tap water v Distilled water

[Mistlebee15]

Good Morning all,

I have been watering my orchids with distilled water, as the tap water is our area is very hard. The make I am using is very expensive and classed as food grade.

I have found another option now , which is classed as car grade, and a 1/4 of the price.

Would this work just as well, as I do not want to swap and harm my orchids.

Any advice would be gratefully received.

Thank you