RO/DI with booster pump

Big Dog

Big Dog

New member
Recommendations please, prefer a system already setup. I have well water (sliding pressure that doesn't hold 60psi) and it's cold. Current RO is three stage and it isn't quite making the grade in TDS. I would also welcome sediment/filter spec recommendations for a booster pump system from members and vendors. PM's welcome!
 
I would talk to Russ at Buckeye Field Supply. Great guy to deal with. Will only sell you what you need and I believe he is an sponsor here on RC. HTH
 
Have you considered kati ani? Ray has his unit for sale and might be a better option due to your pressure and well water, since theirs no waste water with kati ani you won't be running your well dry with the rejection rate of a typical rodi unit.

Just my .02, I am not on commision sales or anything haha
 
You could just add a booster pump, and DI to your RO now for a few dollars. I have city water and still have to use a booster. I have had a vertex for about 3 years running well.

Vertex is about 60$

How big of RO do you have now?
 
I have the bulk reef supply RODI unit that was at last night's meeting with their boost pump on my well. Works awesome. I had all kinds of algae problems before and they are going away since the unit was installed. My auto top off is connected directly to the RODI and I have another line that goes to a rubbermaid trash can to mix salt. Maintenance is much easier now.
 
AHDOnline said:
You could just add a booster pump, and DI to your RO now for a few dollars. I have city water and still have to use a booster. I have had a vertex for about 3 years running well.

Vertex is about 60$

How big of RO do you have now?
Click to expand...

I really need to upgrade . :). I bought an established take and the gentlemen threw in the RO unit. It's just a 25 gpd and it was on city water. It doesn't get 25 a day, more like 15. Good thing the well is a great producer .. :)

The DT is a 90 gallon and before I brought it home I set up a 40 and 20 QT ..... :lolspin:. I'm doing 20-25% on all of them weekly right now until my confidence goes up. I just can't shake the nitrite .005 and the nitrates are at 10.

One of the members (Thanks whoever it was, I did offer to pay for it) gave me a TDS monitor and of my supplies of RO water (The makeup and the reserve are running 004 -016 in TDS. Seem to be blooming and I want to get it under control before it gets out of control.

My cheato didn't seem to be growing so a I put a new light on it 3 days ago and I won a bag last night. I'm hoping to get a little more performance out of the macro!
 
Hi, we have a BRS
5 stage system with a booster pump for our well water. We love it, no complaints.
 
Hi, we have a BRS
5 stage system with a booster pump for our well water. We love it, no complaints.
 
If your water output is low and the TDS reading is high, you may need to change the media in the RO unit.
 
Big Dog said:
One of the members (Thanks whoever it was, I did offer to pay for it) gave me a TDS monitor and of my supplies of RO water (The makeup and the reserve are running 004 -016 in TDS.
Click to expand...

You didn't mention having a DI stage so 4-16 TDS may be the best you can expect, especially if your tap water has a very high TDS level.

RO membranes are rated by gph at a certain line pressure, though usually this line pressure isn't specified, and also an efficiency, normally stated as a percentage of solids removed. Membranes with a higher gpd rating generally have a lower efficiency rating.

If you have tap water with a TDS of 250 and a membrane with a 95% efficiency rating, you can expect to get output water with a TDS of 12-13. The only way to get it to 0 is to add a DI stage.

Adding a pump will not increase the membranes efficiency, but it will increase the gpd. As far as upgrading, most of the components are basically the same from one system to another. The main difference is the mambrane itself.
 
I just made a barrel of water, it's at 6 ppm. I have a well and the last TDS in reading was 126 ppm. Probably could just add a DI unit but I'm not liking the time it takes to make 32 gallon (2 days). Correct me if I'm wrong but if I wanted to do an upgrade myself for more flow and low TDS, I would need a new membrane, flow restricter and the DI unit. Anything else??? That's all assuming my membrane housing will be sized for the new membrane. I'm thinking they are universal?
 
Big Dog said:
I just made a barrel of water, it's at 6 ppm. I have a well and the last TDS in reading was 126 ppm. Probably could just add a DI unit but I'm not liking the time it takes to make 32 gallon (2 days). Correct me if I'm wrong but if I wanted to do an upgrade myself for more flow and low TDS, I would need a new membrane, flow restricter and the DI unit. Anything else??? That's all assuming my membrane housing will be sized for the new membrane. I'm thinking they are universal?
Click to expand...

6ppm from 126 input water is 95%. That's probably the best you'll do without a DI. You can replace the membrane and restrictor with one which is rated for more gpd (the housings are the same) but your efficiency may drop slightly (TDS will raise).

I'm also on a well and have 2 RO filters, one with a 50 gpd and the other with a 100gpd membrane. My pressure varies from 50 -65 psi and each RO makes exactly half the amount they are rated at.
 
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