i should have explained a bit better
ive had a diy system for about 6 years and ive hardly used it.
i have a tank, a shurflo pump,heavy duty battery i had for last van, hose reel and a couple of poles.
when i fill the tank at home, i use the following procedure
water tap - resin vessel - tank
its a bit messy and old now, but still works
i was just wanting something a bit more tidy and compact.
as i said i hardly use this system but could change a few jobs over to get more use out of a new one
capn sparkle, tds reading is quite high before i use the resin,
thanks again for your comments guys