Excessive Anion DI media usage

[TheReaperOfMars]

Sorry, but that is not an explanation for unbalanced consumption of the anion resin and not the cation resin. The total positive charges in water will exactly match the negative charges, and they thus deplete both resins.

The only way one can get depletion of only one or the other resin is if the water is very acidic or very basic (not typical of drinking water) or if there are uncharged ions that become charged one way or the other in one of the resins. CO2 fits that latter description, is very common in well water, and is nearly always the cause of selective anion depletion.

Fair point. I have the CO2 problem with my well water as well. Just haven't worked out a good solution yet. Still trying to figure out how to push the correct flow through the DI resin after aeration.

 

[KStatefan]

Fair point. I have the CO2 problem with my well water as well. Just haven't worked out a good solution yet. Still trying to figure out how to push the correct flow through the DI resin after aeration.

I use a Tunze ATO pump

 

[Dburr1014]

I use lye to regenerate the anion.

Take 45 minutes and back to running.

 

[Frozen Tundra Reef Dreams]

Sorry, but that is not an explanation for unbalanced consumption of the anion resin and not the cation resin. The total positive charges in water will exactly match the negative charges, and they thus deplete both resins.

The only way one can get depletion of only one or the other resin is if the water is very acidic or very basic (not typical of drinking water) or if there are uncharged ions that become charged one way or the other in one of the resins. CO2 fits that latter description, is very common in well water, and is nearly always the cause of selective anion depletion.

Interesting. I have a very similar issue and I was tempted to send out for ICP tests, until I saw your post. I will installation degassing setup soon. For curiosity sake, if properly performing degassing setup does not cure my ills, which direction shall I proceed in?

 

[Randy Holmes-Farley Verified Community Expert]

Interesting. I have a very similar issue and I was tempted to send out for ICP tests, until I saw your post. I will installation degassing setup soon. For curiosity sake, if properly performing degassing setup does not cure my ills, which direction shall I proceed in?

Bad membrane? There are no chemicals in drinkable water other than CO2 that typically cause rapid anion depletion in an ro/di system

 

[Frozen Tundra Reef Dreams]

Bad membrane? There are no chemicals in drinkable water other than CO2 that typically cause rapid anion depletion in an ro/di system

Membrane was replaced 100 treated gallons ago with a dow filmtek membrane. Thank you for chiming in