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RODI System Recommendations and Considerations (and which ones not to buy)

yosemiteclimber said:
You are in Walnut Creek if I recall? I won't be home until late tonight - but around all day tomorrow. If you need RODI water you are welcome to swing by - I have a 200GPD that cranks it out pretty fast!

But if you need it literally right now/immediately, Cali-Kid is probably your best option, either buys you time to find a replacement system though!
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yosemiteclimber said:
@Alexander1312 OH WAIT! I do have an aquatic life (4 stage) in my garage! It's only 50GPD but you are welcome to it! I recently replaced it with the CoralVue/Ice Cap one I grabbed during that Black Friday big sale.
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Really appreciate the offer, thank you! I had to make a quick decision and ordered a system from Air Water and Ice, and this should be here by Tuesday.
 
Closing the loop on what I ended up buying—I thought I had already posted this somewhere, but apparently not.

So I bought the AirWaterIce.com Neptune 8-stage system - https://airwaterice.com/collections...ts/neptune-8-stage-rodi-with-2-membranes-3-di
I added the following two upgrades:
- Catalytic carbon
- Cation/Anion/Mixed Bed

And then the booster pump: https://airwaterice.com/collections/pumps/products/booster-pump-power-station

Customer service, aka Chris, is probably more accessible than anywhere else. I tried all three — email, text, phone—and got an answer on all of them. He called me back late his time.

It is a sound system, but the learning curve was certainly much steeper than that of my previous system. This is a bit the downside with Chris. He is an expert, but he understands that many customers are not. He has tried to limit his expert talk, but he has not always been successful. The instructions that come with the equipment are very detailed but not really that user-friendly.

A few changes I had to make subsequently based on his recommendation, due to low water pressure (40 PSI):
- Replaced the 1/4 supply line with a 3/8 supply line. This included adding a hose adapter to the water supply.
- Moved the booster pump after the pre-filter - which will cause the need to replace the sediment filter every time I replace the resins (not sure if my understanding is correct though).
- Replace the cheap pressure gauge which came with this (which made an annoying sound) - seems like the margin on these products is not high enough to add a higer quality gauge.

Overall, it runs now well, but I am thinking moving it to the garage - but for this I might need help - will probably offer my infamous stakehouse vouchers or other stuff I have for this (watchout for another post).

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Sounds like we need to do a club event. Been meaning to for awhile.
Alexander1312 said:
Closing the loop on what I ended up buying—I thought I had already posted this somewhere, but apparently not.

So I bought the AirWaterIce.com Neptune 8-stage system - https://airwaterice.com/collections...ts/neptune-8-stage-rodi-with-2-membranes-3-di
I added the following two upgrades:
- Catalytic carbon
- Cation/Anion/Mixed Bed

And then the booster pump: https://airwaterice.com/collections/pumps/products/booster-pump-power-station

Customer service, aka Chris, is probably more accessible than anywhere else. I tried all three — email, text, phone—and got an answer on all of them. He called me back late his time.

It is a sound system, but the learning curve was certainly much steeper than that of my previous system. This is a bit the downside with Chris. He is an expert, but he understands that many customers are not. He has tried to limit his expert talk, but he has not always been successful. The instructions that come with the equipment are very detailed but not really that user-friendly.

A few changes I had to make subsequently based on his recommendation, due to low water pressure (40 PSI):
- Replaced the 1/4 supply line with a 3/8 supply line. This included adding a hose adapter to the water supply.
- Moved the booster pump after the pre-filter - which will cause the need to replace the sediment filter every time I replace the resins (not sure if my understanding is correct though).
- Replace the cheap pressure gauge which came with this (which made an annoying sound) - seems like the margin on these products is not high enough to add a higer quality gauge.

Overall, it runs now well, but I am thinking moving it to the garage - but for this I might need help - will probably offer my infamous stakehouse vouchers or other stuff I have for this (watchout for another post).

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Would be great to hear the parts that didn’t make sense to you specifically so they can be fixed.
If you have any other questions I’m happy to try to answer. I would think @Srt4eric is your man to move it, but I might be able to depending on the particulars.
 
Coral reefer said:
Sounds like we need to do a club event. Been meaning to for awhile.


Would be great to hear the parts that didn’t make sense to you specifically so they can be fixed.
If you have any other questions I’m happy to try to answer. I would think @Srt4eric is your man to move it, but I might be able to depending on the particulars.
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After this purchase I certainly got more interested into this topic. Looks like folks prefer to do a sequential setup of dual membranes but Chris argues that a parallel setup is more cost-effective due to cost savings from lower usage of resins over water savings. Even in California according to him. He had a whole calculation about this but would be curious if this is correct. Also, I am interested in the different functions of resins, how often to replace the various stages etc. And the most annoying part to this date is the booster pump which seems to be a very finicky setup which I am still playing around with.
 
Alexander1312 said:
Closing the loop on what I ended up buying—I thought I had already posted this somewhere, but apparently not.

So I bought the AirWaterIce.com Neptune 8-stage system - https://airwaterice.com/collections...ts/neptune-8-stage-rodi-with-2-membranes-3-di
I added the following two upgrades:
- Catalytic carbon
- Cation/Anion/Mixed Bed

And then the booster pump: https://airwaterice.com/collections/pumps/products/booster-pump-power-station

Customer service, aka Chris, is probably more accessible than anywhere else. I tried all three — email, text, phone—and got an answer on all of them. He called me back late his time.

It is a sound system, but the learning curve was certainly much steeper than that of my previous system. This is a bit the downside with Chris. He is an expert, but he understands that many customers are not. He has tried to limit his expert talk, but he has not always been successful. The instructions that come with the equipment are very detailed but not really that user-friendly.

A few changes I had to make subsequently based on his recommendation, due to low water pressure (40 PSI):
- Replaced the 1/4 supply line with a 3/8 supply line. This included adding a hose adapter to the water supply.
- Moved the booster pump after the pre-filter - which will cause the need to replace the sediment filter every time I replace the resins (not sure if my understanding is correct though).
- Replace the cheap pressure gauge which came with this (which made an annoying sound) - seems like the margin on these products is not high enough to add a higer quality gauge.

Overall, it runs now well, but I am thinking moving it to the garage - but for this I might need help - will probably offer my infamous stakehouse vouchers or other stuff I have for this (watchout for another post).

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Consider adding a third RO canister to the setup, chaining the three in series rather than parallel... I did that some years ago and push about 85psi with a booster... my waste water is about 0.75G to 1G product...
 
I disagree with the membrane idea. It’s going to depend on your source water how much resin you go through, and which ones. I spend more on carbon blocks than resin for sure. Getting more product and less waste gives me more product per lifespan of the pre filters. Mainly I do it to save water though, cause I’ve lived in California my whole life and am used to the constant drought even when we kid ourselves and say it isn’t currently we know it will be again soon.
 
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