RO/DI system leaking

[hillegom]

Where exactly does it leak from?
Around the canister threads? Might need a new O ring, or just lubricate the O ring sparingly.
Connection to canister? Maybe new teflon tape, or not enough or too loose
John Guest fitting? Make sure the tubing is pressed in far enough, or it could just be faulty.
RO membrane container at the threads?
If it leaks at all, something is wrong and you will have to sleuth it out.
Otherwise, some day you will come home to a mess when/if it finally breaks/fails.