RO/DI question

[Myka]

Originally Posted by Treebeard

I will try to supply a picture when I go home for lunch.
I have the order exactly as you stated below. It is possible that I exhausted the DI resin because I did not change the membrane at the same time I changed the resin and particulate filters, but the guy from Aquasafe said the membrane should last for 12-24 months.

I will also test the raw water and the water after the membrane.
It is a 7 stage filter, if I understand correctly. There are three canister filters, followed by the RO membrane, followed by three DI canisters.
I agree with your comments on this adjustable flow restrictor. It is a real pita to set correctly. What kind of system are you using?

I have an AquaFX Barracuda 4 stage was $180 I think. Your first three cartridges (I'm assuming one particulate and two carbons?) should be changed every 6 months no matter what. The RO should last the longest, but it's hard to pinpoint how long it will last. Be sure when you do replace it that you replace the first three just before replacing the RO. The DIs will last varying amounts of time as well given how much TDS is reaching them. Measure the TDS of the water after the RO but before the DIs as I described above, and the tap water, and we can go from there.