ok, I have a 3 stage rode system from @Bulk Reef Supply , and added the booster to double output. I have noticed that the resin is not changing color at all, after making hundreds of gallons of rodi water. TDS output read 3 right after I changed everything, all filters ammonia, and di resin. Still 3 and now 4. Anyone else ever run into resin not changing color, and what can I do? Water appears to be going through that canister.
Cheers.
Cheers.