Add on Soda blaster for pressure washer

[Markgkda]

Do any of you have or know anything about these add on soda blasting units for pressure washers. I have some hard water deposits on brick for a customer. I did a test with some one restore and it didn't even phase it. I know there are two step processes like using white scum remover then hitting it with NMD 80 while wet but Sometimes that doesn't do the trick either. I was wondering if anyone has used these soda units for this type of work? Here are the results of my test in pics. I applied product once and let it dwell for 20 mins then rinsed and repeated. Not much success.. i have found over the years that this is one of the hardest things to do as there are so many variables.
What say you?

 

[AZ PowerWash Pros]

Looks like Efflorescence and NMD80 sometimes works. But try Effortless sometimes it works better. We also use a product called SureKleen 600 on new masonry construction, it will burn you though so be careful. I have a Soda Blaster attachment and used it like 2 times my whole career and was never impressed.