Hi all, Another annoying new member post. I ave set up a business with my father in law currently using a gutter vacuum. Some business has come in and all repeat for next year. We now want to go water fed pole to boost the initial business and pick up additional gutter work. I have found this system, the chap sells them via ebay: SureFlo Reverse Osmosis Waterfed Window Cleaning Trolley System (£5 Deposit) The upside to this system is the ability to load non-pure water on and it filters on the way out. it uses a four stage filter. Having messaged he chap last week the water gets to below 6 but not down to zero. firstly do you think the set up, pumps etc is good? secondly would you advise a final resin stage add on or will it be sufficient? thanks so much.