RODI Please Help

Menhusen

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Can’t get my TDS to 0
6 stage KoolerMax
Well water
116 TDS coming in
16 TDS coming out of membrain
5 TDS coming output

Just changed DI resin
 
What is your water pressure? My guess is it is low, and you would see large improvements using a booster pump.
 
What is your water pressure? My guess is it is low, and you would see large improvements using a booster pump.

After sediment and carbon filters I have 35psi. Not for sure before filters
 
Agree....pressure is too low....you'll need a booster pump. At pressure, a good membrane should be producing 98+% rejection.

The other potential issue, and more common with well water, is the rapid depletion of DI resin from carbon dioxide in the water. You will first need to eliminate the CO2 by bubbling, and then passing through the DI. There are a couple of options with this.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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