Jamessorrell83
New member
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Hi I'm new to here, been cleaning traditionally for 10 years, going over to wfp I have the new prf merlin ro system and my water pressure in portsmouth is really low I have a booster fitted and currently getting 35 psi would really like 40 psi so it prolongs the life of the membranes but my question is what sort of tds reading should I be getting after filtration? And before resin. I'm currently getting around 33 I've been told thats very good with the hard water I get in my area, any help would be appreciated.