Ok so I am a bit nutz and somewhat OCD on my RO/DI.
My system is on the backside of the display tank in my shop, the DT is in my office.
Started out with the BRS 6 stage, and two small 65G horizontal tanks on shelves for FW storrage.
Used Brutes to mix when needed.
That was just ok, but wanted a better system so I upgraded to the following.
From the water line in the shop I added a T and a ball valve.
The First filter in line is the Pentek big blue. This is a pre-filter and removes Sediments, Iron, and other crap in my well water.
Yea on a well so no chlorines to deal with.
Then it goes to the Booster pump, then to the RO/DI's sediment filter, carbon blocks, RO cans, and to the DI resins starting with a pair of Cation canisters, followed by two Anion canisters, followed by two Mixed bed canisters.
Out to the manifold with a Apex flow meter (Meter has yet to read still troubleshooting it) then to my pair of Norwesco 165G vertical containers used as my salt water mixing station.
Tank on left is fresh water and is also my ATO container.
Tank on right is saltwater and also used as my AWC container.
I have a timer on the mixing pump, so it stirs the saltwater storage tank for thirty minutes twice a day.
I should always have enough mixed saltwater to do a major water change in case of emergency.
Or at the least fill up my QT tanks for emergency transfer.
I have two TDS meters on the system.
First probe is set on the source water, average input is around 180 to 200TDS.
2nd is located after the BRS sediment and carbon blocks before the RO canisters, Reading matches source of 180-200 TDS.
3rd is after the RO canisters and before the DI stages, readings are around 5-7 TDS.
The forth is between the Cation and Anion canisters, reads at 11.
The final two are for redundancy on the product water, just in case one fails, Both have always read 0 TDS.
I use the BRS swap method, When the first canister is consumed and the second starts to show color changes, I pull the depleted canister from the first position to be re-filled, take canister two and put it in position one, and the re-filled canister goes into the second Spot.
I have done it this way to make sure I don't mess it up.
I made the manifold so I can send product water where ever I will need it now or in the future.
I still have to refine and finalize a few things. Find a permanent home for the manifold, add heaters to both storage tanks for the winter months, summer heat is not a problem here, and finalize my drain system for both the RO/DI and AWC, systems.
Clean up the routing of the lines and cables.