Okay, sorry I know theres a lot of threads on this type of thing but didn't want to threadjack someone elses thread. Trad going over to WFP, still learning what's what and have been doing a lot of reading but still a bit unsure.. Got my TDS meter through today and took a reading, 190 is my PPM - so I guess I would need an RO unit? My round isn't the biggest and I generally do anywhere between 7-10 jobs a day (sometimes a couple more if I have help), I have decided to start off with a trolley/25l barrel system and just put 2-3 spare 25l containers of pure water in the back of the van (hopefully that will be enough). I have a mostly emtpy garage built in (town house), hose would have to be run around the side of the house and into the front of the garage as there is no water supply in the garage itself. I don't want to overspend but same time I don't want to buy something and end up needing more! I was thinking RO>DI>Container>25l barrels. What equipment would you guys recommend for this type of volume/setup/hard water etc?