Well water and RODI issues

frey · 04/01/2016, 08:07 PM

Has anyone else had a problem burning through DI resin and filters using well water? I have a spring fed well and I go through the filters a lot faster than I did when I had city water, but the DI resin color changes in like 90 gallons. There has to be some sort of reaction going on. The thing that shocks me the most is that the in only has about 24ppm compared to city water that was near 100ppm. With less pollutants I would think they would last longer, but they don't.

ReachTheSky · 04/02/2016, 01:06 AM

Check the pH of the well water. If it's high in CO2 (pH below 7.0), it can use up the DI resin really really fast.

frey · 04/02/2016, 07:39 PM

thank you, i actually found some post's on this after i made it a thread.

joejvj · 04/03/2016, 09:27 AM

I had the exact same situation. I move into a house with a private well and found that my DI cartridges lasted around 80-100 gallons. Amazingly, the raw water entering the RO membrane had a TDS of 36, with the RO effluent measuring 2.

I had no room to build a CO2 degasser. What I did was replace the DI cartridge with a stack of Polyfilter discs (the ones sold as replacement media for the Poly Bio Marine "Kold-Ster-il" system). Works like a charm for me.

04/01/2016, 08:07 PM	#1
frey Registered Member Join Date: Oct 2013 Location: Jersey Shore, Pa Posts: 92	Well water and RODI issues Has anyone else had a problem burning through DI resin and filters using well water? I have a spring fed well and I go through the filters a lot faster than I did when I had city water, but the DI resin color changes in like 90 gallons. There has to be some sort of reaction going on. The thing that shocks me the most is that the in only has about 24ppm compared to city water that was near 100ppm. With less pollutants I would think they would last longer, but they don't.

04/02/2016, 01:06 AM	#2
ReachTheSky Registered Member Join Date: Aug 2011 Location: Burbank, CA Posts: 1,114	Check the pH of the well water. If it's high in CO2 (pH below 7.0), it can use up the DI resin really really fast. __________________ Van Current tank: 7.5g Nano-Reef \| Modified AquaClear50 \| RapidLED Par38 bulb \| 2x Koralia 240gph

04/02/2016, 07:39 PM	#3
frey Registered Member Join Date: Oct 2013 Location: Jersey Shore, Pa Posts: 92	thank you, i actually found some post's on this after i made it a thread.

04/03/2016, 09:27 AM	#4
joejvj Registered Member Join Date: Jun 2005 Location: Asheville, NC Posts: 115	I had the exact same situation. I move into a house with a private well and found that my DI cartridges lasted around 80-100 gallons. Amazingly, the raw water entering the RO membrane had a TDS of 36, with the RO effluent measuring 2. I had no room to build a CO2 degasser. What I did was replace the DI cartridge with a stack of Polyfilter discs (the ones sold as replacement media for the Poly Bio Marine "Kold-Ster-il" system). Works like a charm for me.