BristleWormHater
New Member
I need to buy an RODI system, tired of driving to the fish store for water. I'm wondering what kind I will need (3 stage, 4 stage, 5 stage, etc.)
We're all in the same state, What RODi system do you use?
- Thread starter BristleWormHater
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I started with a 4 stage BRS system and added 3 stages later which enables separate anion and cation stages, I think it's overkill though.
Check out this link for some helpful advice and the company is local, call for appointment or they have a free shipping option:
airwaterice.com
Chris (Air, water, and ice) donated a Typhoon RODI 5 stage at our last event and we will be raffling it off at the Holiday party!
Check out this link for some helpful advice and the company is local, call for appointment or they have a free shipping option:
Expert Advice on Selecting & Caring for RODI Systems
This page provides RODI systems advice for both beginners and professionals. The best RODI systems on the market! Expert help and support.
airwaterice.com
Chris (Air, water, and ice) donated a Typhoon RODI 5 stage at our last event and we will be raffling it off at the Holiday party!
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BRS seems to be the best bang for dollar new. But honestly any that you can find at a good deal works. All the filters are generally universal and design is 95% same
The answer to your question will really depend on the volume of your system and production requirement. So, what size?
The water in North Georgia is considered soft (low total dissolved solids), with numbers varying between ~20-60 parts per million (PPM) in the metro area, average of 40-50. That is in contrast to the national average of around 240 ppm. So the use of filters is less heavy and maintenance less frequent.
I would suggest you select a system based on volume of water processed. Between 4 and 7 stages, with the following examples-
Example:
4 stage -
1- ~5 micron prefilter+activated carbon
2- RO stage (~50-100 gal per day capacity)
3- DI mixed bed cartridge
4- post filter (0.1 micron polishing filter)
A 7 stage would look something like this and will handle a hundred+ gallons per day-
You will want a pre filter to keep out particulates (I like both a 5 & 1 micron in series). Then a granular activated carbon (GAC) filter to remove chlorine and organic compounds. Some GAC filters remove chloramines too, a byproduct of some water treatment processes. So check if you have these. An RO (reverse osmosis) filter will get out much of the remaining dissolved solids. Then 2 mixed bed deinonizing filters in series. These are moved from 2nd to 1st positions, with a new cartridge placed in the 2nd position whenever changed, to extend life. These mixed bed DI resins can have color change ability which helps with knowing when to change them. Otherwise, you will have to rely on a meter(s), and inline ones are convenient. Two are best, at beginning & end.
FWIW,
Mixed bed resins do a better job of removing dissolved chemical ions because of some physical chemistry mechanisms which I won’t go into here. You can buy refillable cartridges and bulk resin, then refill them yourself & save money too. There are decent systems from 4 stage to 7+ beginning at -$60 going up into the thousands. So shop around.
Our water here in Cherokee County is around 40 ppm. Which is low enough that I used to not need an RO membrane, just 2 DI canisters with pre & post filters. The economics have changed, and DI resins have increased considerably in price while RO membranes have gotten cheaper, factoring in inflation. An RO can remove much/most of the ions and the DI stage polishes off the rest. A lot more than you may have needed, but that’s an overview.
The water in North Georgia is considered soft (low total dissolved solids), with numbers varying between ~20-60 parts per million (PPM) in the metro area, average of 40-50. That is in contrast to the national average of around 240 ppm. So the use of filters is less heavy and maintenance less frequent.
I would suggest you select a system based on volume of water processed. Between 4 and 7 stages, with the following examples-
Example:
4 stage -
1- ~5 micron prefilter+activated carbon
2- RO stage (~50-100 gal per day capacity)
3- DI mixed bed cartridge
4- post filter (0.1 micron polishing filter)
A 7 stage would look something like this and will handle a hundred+ gallons per day-
You will want a pre filter to keep out particulates (I like both a 5 & 1 micron in series). Then a granular activated carbon (GAC) filter to remove chlorine and organic compounds. Some GAC filters remove chloramines too, a byproduct of some water treatment processes. So check if you have these. An RO (reverse osmosis) filter will get out much of the remaining dissolved solids. Then 2 mixed bed deinonizing filters in series. These are moved from 2nd to 1st positions, with a new cartridge placed in the 2nd position whenever changed, to extend life. These mixed bed DI resins can have color change ability which helps with knowing when to change them. Otherwise, you will have to rely on a meter(s), and inline ones are convenient. Two are best, at beginning & end.
FWIW,
Mixed bed resins do a better job of removing dissolved chemical ions because of some physical chemistry mechanisms which I won’t go into here. You can buy refillable cartridges and bulk resin, then refill them yourself & save money too. There are decent systems from 4 stage to 7+ beginning at -$60 going up into the thousands. So shop around.
Our water here in Cherokee County is around 40 ppm. Which is low enough that I used to not need an RO membrane, just 2 DI canisters with pre & post filters. The economics have changed, and DI resins have increased considerably in price while RO membranes have gotten cheaper, factoring in inflation. An RO can remove much/most of the ions and the DI stage polishes off the rest. A lot more than you may have needed, but that’s an overview.
Air, Water and Ice is a much better deal than BRS. Their 4 stage runs @ $150. I believe a four or five stage is plenty for the water here in Georgia.
BristleWormHater
New Member
I have a 25 gallon tank
This is pretty much exactly what I did too, though the initial system was a hand-me-down from my dad
I have the smallest BRS one (https://www.bulkreefsupply.com/4-stage-value-ro-di-system-bulk-reef-supply.html) and it gets my TDS down to 0 no problem.
I suspect a carbon block + RO would be me close enough but buying + building the optimally smallest RODI would cost more than just using the 4 stage and never thinking about it again!
I do wish I would have bought the faster(?) one instead of the cheapest one, though.
I suspect a carbon block + RO would be me close enough but buying + building the optimally smallest RODI would cost more than just using the 4 stage and never thinking about it again!
I do wish I would have bought the faster(?) one instead of the cheapest one, though.
I’ve been in the market for a system as well.I started with a 4 stage BRS system and added 3 stages later which enables separate anion and cation stages, I think it's overkill though.
Check out this link for some helpful advice and the company is local, call for appointment or they have a free shipping option:
Expert Advice on Selecting & Caring for RODI Systems
This page provides RODI systems advice for both beginners and professionals. The best RODI systems on the market! Expert help and support.
Chris (Air, water, and ice) donated a Typhoon RODI 5 stage at our last event and we will be raffling it off at the Holiday party!
This website is very good and clear to understand with information and pricing!
I think I found my system!
Now, how do I tell Santa …..
Just sent my info to Santa, let’s see if she gets it.
My luck December 26 I’ll be calling.
