Awful Well Water: your help needed!

[Buckeye Hydro Verified Sponsor]

Has anyone found an inline RO degasser, to remove all that excess CO2 from well water before it hits the DI resin?

If CO2 is your issue, simply route your RO water to a reservoir, aerate it, and then send it to the DI.

Russ

 

[Buckeye Hydro Verified Sponsor]

google Membrane Degasification....some options...At my job we use either heat or vacuum. sounds expensive also...good luck

Unfortunately, membrane degassification isn't economically feasible for 99.99% of aquarium owners. It works, but it is expensive.

Russ

 

[Buckeye Hydro Verified Sponsor]

btw, your rejection is 97% right now. that’s getting low.

Well... yes and no. For example, realize that factory spec membrane rejection rates are applicable given an appropriate set of test conditions, among which is typically a 15% recovery, or a 5.5. to 1 waste to permeate ratio. Almost no one in this hobby has their system set up like that.

Russ

 

[Buckeye Hydro Verified Sponsor]

Would recommend a whole house water filter first. Then take it from there

A whole house sediment filter makes sense only... if your well water is high in sediment. Some well water is, some isn't. Removing sediment does nothing to your TDS or CO2.

Russ

 

[Buckeye Hydro Verified Sponsor]

Sediment 1 micron, then a 1 micron and .5 micron carbon block. They’re not old at all but I do have new ones on the way.

Why use two carbon blocks with water without VOC's, chlorine, or chloramine? There is a price you pay for each added prefilter in terms of replacement cost, and in terms of lost pressure. A well-designed system is configured only with the necessary prefilters.

Russ

 

[Buckeye Hydro Verified Sponsor]

If you have 500ppm pre membrane, curious to see what tap has.

Prefilters (meaning the filters that touch the water prior to the membrane, do little if anything to remove dissolved solids that we measure with a TDS meter.

 

[tpack17]

Has anyone found an inline RO degasser, to remove all that excess CO2 from well water before it hits the DI resin?

I get under 75 gallons of RODI per canister of DI before the TDS gets to above 3, and with ~400 gallons of reefs, it is very tiresome and expensive to constantly replace resin. I go through about 100 gallons of water a week.

First I talked to @Bulk Reef Supply, and bought their very fine carbon blocks to bring incoming TDS down. Did not work at all. Then, they suggested a booster pump to improve membrane performance- it brought the TDS down one or two, but was not effective. After that, they suggested their Pro Cation/Anion/Mixed resins, with which I had even worse results. Their last suggestion was buying another DI canister, to make sure I am utilizing all of the prior resin to its full extent- no effect. I’m not complaining about their customer service- they are excellent and knowledgeable, but clearly this is not working.

Overall- I have spent a few hundred bucks trying to improve the RODI performance and have nothing to show for it.

After prefilters the TDS is ~500. Post membrane is 11. 50-75 gallons of RODI until the tds is above 3 and I need to change it.

Help me, RODI gods!

I just started degassing in a separate garbage can then pumping it through resin. I too could monly get 150g per cartridge of anion due to C02. I use a jebao pump to pump through two sets of resin filters.I am now at around 350g through cannisters and zero exhaustion of resin. Based on what i have read it seems I should get about 1500g per cartridge of anion before it exhausts. That is 6 months of water for me. FYI, I am 600 into r/o and 4 out.