Rodi pressure and canister

[Mr. Gonzalez]

So I did search amd didn't quite find what I was looking for. My water pressure is at 60-65 psi. I run one water line into this 4 stage and the waste I run into another 4 stage. Tds coming out is 0 off of both systems. My questions are is 60 psi good enough? And my di resin canister has the water about 1/4 the way, is this normal?

 

[Gtinnel]

65psi is toward the minimum recommended pressure, so it should be fine.
Just curious but why run the waste through a whole other system instead of just using a second membrane?

 

[theMeat]

60-65 is fine and no, 1/4 full is not normal. You can either unscrew the canister a little to allow the air to escape with water on/unit running. Or tilting the unit while it’s running might be enough to get the air out.
Agreed with op. No need to pre- membrane filter the water with a whole nother unit

 

[Justdrew]

Air in DI is perfectly fine.

 

[Gtinnel]

My di usually has air trapped in it and has never been an issue. I never bothered to bleed it out.

 

[Mr. Gonzalez]

60-65 is fine and no, 1/4 full is not normal. You can either unscrew the canister a little to allow the air to escape with water on/unit running. Or tilting the unit while it’s running might be enough to get the air out.
Agreed with op. No need to pre- membrane filter the water with a whole nother unit

Not sure how to run the second membrane, also had the other system just laying there so I figure might as well use it.

 

[theMeat]

Would think with the di resin…the third that is wet/being used would get exhausted 2/3 faster than need be, and the 2/3 that is not wet is wasted

 

[theMeat]

Not sure how to run the second membrane, also had the other system just laying there so I figure might as well use it.

If you Google ‘rodi water saver’ it’ll get you onto it. Here’s a link

| The Beginners Reef

As aquarists, our job is not to maintain our fish but to in fact maintain water. By maintaining high-quality water, your aquarium will thrive. A…

www.thebeginnersreef.com

Basically the ‘water saver upgrade’ in this pic is the second membrane which re-uses the waste water from the first membrane

 

[Justdrew]

Would think with the di resin…the third that is wet/being used would get exhausted 2/3 faster than need be, and the 2/3 that is not wet is wasted

All of the resin is wet inside the DI cartridge. The water flow is from the bottom to top inside the cartridge. The water enters the DI cannister from the outside and flows down. The water exits by flowing up through the cartridge.