What’s a good rodi unit?

[Jvesche20]

when I first stated I went to my lfs and been using an aquatic life 4 stage RODI unit. I replaced 3 out of 4 of the canisters and still getting 6-8 tds. I’m beginning to realize that this unit isn’t the best. What should I get instead? I have a 125 gal tank with 40 gal sump.

 

[Frtdrmrose7]

when I first stated I went to my lfs and been using an aquatic life 4 stage RODI unit. I replaced 3 out of 4 of the canisters and still getting 6-8 tds. I’m beginning to realize that this unit isn’t the best. What should I get instead? I have a 125 gal tank with 40 gal sump.

I have the aquatic life 4 stage 100gpd but addded the BRS triple DI saver to upgrade my usable quantity of resin and to cut down on waste. I now have 6 stages soon to be 7 once I fill my empty canister. This has a pressure gauge, auto shut off, and purge valve for the membrane. Amazon $149

 

[Frtdrmrose7]

when I first stated I went to my lfs and been using an aquatic life 4 stage RODI unit. I replaced 3 out of 4 of the canisters and still getting 6-8 tds. I’m beginning to realize that this unit isn’t the best. What should I get instead? I have a 125 gal tank with 40 gal sump.

How old is your membrane?

 

[Jvesche20]

How old is your membrane?

Less than 4 months old

 

[Geebs19]

I love my BRS unit!

 

[Jvesche20]

I love my BRS unit!

Which one do you use?

 

[Frtdrmrose7]

Less than 4 months old

How much water have you run through it?

 

[Frtdrmrose7]

I love my BRS unit!

Me too! Makes RODI so much better

 

[Jvesche20]

How much water have you run through it?

Couldn’t tell you an amount. Lots of water. I do weekly water changes of about 15 gallons. Plus top off water. I recently got a 55 gal QT that I filled up.

I thought the membrane was supposed to be changed every year

 

[EBNewbie]

The BRS 7 stage RODI system will save you money by allowing you to use 100% of your resin. If your pressure at the RO membrane is low, add a pump and you're done. You could go cheaper but you'll either have higher DI resin cost or TDS in your water.

 

[Frtdrmrose7]

Couldn’t tell you an amount. Lots of water. I do weekly water changes of about 15 gallons. Plus top off water. I recently got a 55 gal QT that I filled up.

I thought the membrane was supposed to be changed every year

What is your TDS from the wall?(before membrane) have you filled a clean container and. Tested the water in that? I was having similar issues due to salt. Residue in my barrels.

 

[Jvesche20]

What is your TDS from the wall?(before membrane) have you filled a clean container and. Tested the water in that? I was having similar issues due to salt. Residue in my barrels.

What do you mean? I have my rodi water in a trash can with a lid. It’s made of plastic not sure if that will make a difference. I tested the tds of the water that’s going into my unit. It reads 120s that’s before it goes into the unit if that’s what your asking. I don’t mix my salt near where I keep my rodi unit or where I store the water.

 

[Jvesche20]

The BRS 7 stage RODI system will save you money by allowing you to use 100% of your resin. If your pressure at the RO membrane is low, add a pump and you're done. You could go cheaper but you'll either have higher DI resin cost or TDS in your water.

What’s the recommended time to replace these resin

 

[Foothill Corals]

Another thing to consider is the source water you are starting with. Does your city use chloramine? If you call BRS they can help you pick the rite unit. I like the 150Gal water saver option that uses 2 x 75gal membranes.

 

[Frtdrmrose7]

N

The BRS 7 stage RODI system will save you money by allowing you to use 100% of your resin. If your pressure at the RO membrane is low, add a pump and you're done. You could go cheaper but you'll either have higher DI resin cost or TDS in your water.

If I were him I would do what I did and just add the BRS triple DI saver for $89

 

[Frtdrmrose7]

What’s the recommended time to replace these resin

A good resin is color changing (BRS sells it) so when it goes Amber it’s exhausted

 

[Frtdrmrose7]

What do you mean? I have my rodi water in a trash can with a lid. It’s made of plastic not sure if that will make a difference. I tested the tds of the water that’s going into my unit. It reads 120s that’s before it goes into the unit if that’s what your asking. I don’t mix my salt near where I keep my rodi unit or where I store the water.

More than likely the Catanion side of your mixed bed resin is exhausted.

 

[Frtdrmrose7]

More than likely the Catanion side of your mixed bed resin is exhausted.

For $89 you’ll get this at BRS (1) anion resin (1) catanion resin (1) mixed bed resin, a three way TDS meter. Everything you’ll need.

 

[Jvesche20]

Do you get anything higher than 0 without that?

I’m assuming you are at 0 tds with that

 

[MTBake]

For $89 you’ll get this at BRS (1) anion resin (1) catanion resin (1) mixed bed resin, a three way TDS meter. Everything you’ll need.

I'd go with this route as well