cant work out at the minute whether my di vessel has gone kaput or not, have just upgraded my 100 gallons a day ro to a prf ro that produces 1.9 ltrs/m, pure water still only trickling out of di vessel, then completely stopped ,have checked for blockages and seems ok is 11 ltr di vessel suitable to run with this ro I,m thinking I need a bigger water softener cheers for any replies,