RODI Tank Question

[RIreefGuy]

Hi all,

I picked up a sweet BRS RODI unit and would like to incorporate a 4 gallon bladder tank. It would be great to be able to grab a gallon or 2 quickly if needed.

3 questions:

Is this a bad idea for any reason?

To plumb this, do I just tee the tank in between the DI canister and the faucet end?

Do I need a check valve after the DI canister to prevent backflow/pressure?

Thanks in advance!!
Bob

 

[Even Further]

If you're going to store RODI water, get a larger tank. It's super convenient to have RODI on tap. I would look at a farm store to get a 30 to 60 gallon poly water tank. Even a 20 gallon brute tote would be better than such a small tank like that.

Install a float valve in the tank, auto shut off valve, and a flush valve kit, (if you don't already have this). Once the tank fills, the RODI will shut off via the float switch. I would still have some sort of primary valve to completely shut off the supply line to the RODI.

 

[RIreefGuy]

Thanks for the reply! I should have mentioned that I have small tanks: 3.4g and 20g. I do have a 5g bucket with an auto shutoff plumbed in. This is more than enough for water change needs. The bladder tank would just feed a little faucet that would be used to fill the 1 gallon container for ATO on demand and to rinse test kits and meters etc.

 

[RIreefGuy]

I would still have some sort of primary valve to completely shut off the supply line to the RODI.

Do u leave this on or off typically?

 

[Even Further]

I leave it shut off.

 

[RIreefGuy]

Hey @Bulk Reef Supply if I put a pressure tank south of my DI canister do I need a check valve between the DI and tank?

Thanks!!!

 

[ccombs]

Hey @Bulk Reef Supply if I put a pressure tank south of my DI canister do I need a check valve between the DI and tank?

Thanks!!!

I think a check valve is always a good idea, it wouldn't hurt in your scenario and they are fairly cheap. I have a small tank as well, and I keep 35 gallons of RODI and Salt mixed on my patio and it has been super nice. It is plumbed in for auto water changes and auto top off. This may be more than what you want to do, but it sure is nice to have 10 weeks worth of water ready to go at all times.

Whenever I need to refill, I have a line inside my house with a check valve and I run a temporary line from my RODI under my sink to this connection and leave it while they fill up.

The 35 gallon container does not take up a ton of space so it might be worth considering just storing this much water in your garage or something.

 

[RIreefGuy]

Thanks! I'm an avid follower of your thread and I know exactly what u have going on over there haha. I was confused when I saw your sweet storage shed on this thread =) Truly appreciate your feedback. You are right; why not throw a check in, needed or not. Thanks again and keep up the good work over there ccombs!

Bob

 

[Bulk Reef Supply Verified Sponsor]

Hey @Bulk Reef Supply if I put a pressure tank south of my DI canister do I need a check valve between the DI and tank?

Thanks!!!

A check valve would be recommended so that water isn't forced back through the DI resin or other parts of the RO system. Like ccombs mentioned, they're fairly inexpensive and also easy to install.

 

[RIreefGuy]

Thank you @Bulk Reef Supply. You guys rock!

 

[redfishbluefish]

Do not use an RO bladder tank. The issue is that it fills on demand, and in the process allows TDS breakthrough. It's the one reason it works well for purified drinking water systems in that it puts a little TDS back into the water, making it palatable. If you put your DI in-line, this breakthrough TDS will burn through your resin in no time. My recommendation....pick up a 4 to 5 gallon drinking water jug (the kind used on water coolers), and fill with RO/DI water. If you want, you could also put a valve in the bottom of the jug to draw water when needed.

 

[Sod Buster]

found this one on amazon. My hand can fit into the lid. I put a bulkhead and vent in the cap. 4 gal

 

[yepreef]

found this one on amazon. My hand can fit into the lid. I put a bulkhead and vent in the cap. 4 gal

Cant seem to find it l, would you please post a link? Thanks

 

[Sod Buster]

http://Checkthisoutonamazom.com

Hmm. Let me see what is going on. Standby

 

[Sod Buster]

Smart enough to do this.

 

[Sod Buster]

I use mine as a remote ATO reservoir in a cabinet. I set mine with the valve up and fill through it with a pump inside my rodi storage tanks. The lid is a 4 1/2" screw top, so my big hands can fit inside. You can easily put a pump in it or another valve.

 

[Tautog]

I don’t have any fancy hookups or valves. I fill 5 gal containers, my 4-stage takes about 50 mins. Using your RO often will extend the life span of it.
I also have the cleanest basement floor, just saying.

 

[Sod Buster]

The small farm tanks in the pic are 6 gallons each. They have a vented cap you can get your hand in also.