My ro-man 200 gpd system is 8 years old now.
Last 6 months water production has gone from 20-23 ltrs an hour to about 12-14 ltrs an hour.
I have changed all filters and both membranes now.
Getting away with it at the moment.
Setup is at parents; good old dad runs water early.
But come winter and restricted running time due too freezing conditions will pose problems.
Gonna get a pressure gauge to check garden water tap pressure.
was 75psi now 45psi.
This is what pressure gauge on RO SAYS.
So once pressure of tap confirmed is low then i have the option of booster pump or MERLIN system. (£369

)
Thanks Smudger for merlin advice.
IF water pressure good then i'm stumped, look for holes in water supply pipe.
Any advice apprieciated.
Lee