Rodi help

gannmann9876 · May 17, 2013

My rodi unit has the 4 gallon tank on it. When I get water out of it and it cuts on the tds before the di chamber go up to around 60 sometimes as high as 90. The tds out of the tap is around 170. Does anyone have any idea why it's doing this. All of the filters and membrane were changed about 2 months ago. The pressure coming into the unit is low only around 30psi. I know that's low could that be it? I go thru a lot of di resign and constantly fighting with hair algae.

Dowtish · May 17, 2013

Low psi is definitely an issue, and that is why you are going thru so much DI resin. And I'm pretty sure your tds issues are from that as well. Do you own the home where you live? You may need to lok into boosting the pressure. If not, you can buy a booster pump.

JumperAlex · May 17, 2013

Also make sure you are restricting your waste water output somehow. I bought a buster pump when I didn't need one because I didn't realize I needed to do this.

90g FOWLR
Foxface lo x 1
Ocerllaris clown x2
Blue spotted Toby puffer x1
Red legged hermit crab x 5-10
Snails x 5
Short spine urchin (red) x 1
Conch x 1
Chocolate chip starfish x 2

JumperAlex · May 17, 2013

I was only getting about 20psi and when I restricted it properly I could get it as high as I wanted it.

90g FOWLR
Foxface lo x 1
Ocerllaris clown x2
Blue spotted Toby puffer x1
Red legged hermit crab x 5-10
Snails x 5
Short spine urchin (red) x 1
Conch x 1
Chocolate chip starfish x 2

gannmann9876 · May 17, 2013

When I ordered the new membrane it came with a flush kit restrictor valve. I thought the low pressure was issue. We own out home but are going to be selling in the near future. Are there any houses where the pressure is high enough for a rodi or does everyone run a booster pump? I wanted to make sure the pressure was the problem before I bought a booster pump and the pressure switch

Tennsquire · May 17, 2013

gannmann9876 said:
When I ordered the new membrane it came with a flush kit restrictor valve. I thought the low pressure was issue. We own out home but are going to be selling in the near future. Are there any houses where the pressure is high enough for a rodi or does everyone run a booster pump? I wanted to make sure the pressure was the problem before I bought a booster pump and the pressure switch

No booster pump here. I run a Spectrapure 60 gpd RO/DI, and the water pressure from the house (Nashville) is just fine by itself. The pressure guage usually shows around 75-80 psi. We're also fortunate to have water with fairly good TDS (I typically get a 110-115 reading at the tap).

JumperAlex · May 17, 2013

I run a 60gpd spectrapure as well. I love it, I normally keep the pressure at about 65psi and it makes water pretty quick. I too am lucky with my water out of the tap (Johns Creek/Alpharetta Ga) between 50 and 55 TDS out of the tap.

90g FOWLR
Foxface lo x 1
Ocerllaris clown x2
Blue spotted Toby puffer x1
Red legged hermit crab x 5-10
Snails x 5
Short spine urchin (red) x 1
Conch x 1
Chocolate chip starfish x 2

gannmann9876 · May 18, 2013

Where Do you have them hooked up? I have mine under the kitchen sink. Is there somewhere that will have more psi?

JumperAlex · May 18, 2013

I have mine hooked up in the guest bathroom. But that shouldn't make a difference, the pressure coming into your house is the pressure coming into your house.

90g FOWLR
Foxface lo x 1
Ocerllaris clown x2
Blue spotted Toby puffer x1
Red legged hermit crab x 5-10
Snails x 5
Short spine urchin (red) x 1
Conch x 1
Chocolate chip starfish x 2

gannmann9876 · May 25, 2013

I got the booster pump installed today. It is pretty loud but necessary. Now the pressure gauge on my Ro unit bounces around like crazy. Does anyone who runs a booster pump have the same problem?

jerry26 · May 25, 2013

I have ro without di and my tap is 240 tds with 30 psi. I run my ro at that 30 psi and only get 9 tds on the output.

Sent from my LG-P769 using Tapatalk 2

JumperAlex · May 25, 2013

Wow, I don't know what kind of booster pump your running but I've got an Aquatec cdp 6800 and its silent as long as I have it resting on a towel. Maybe try that and it will be more quiet for you.

90g FOWLR
Foxface lo x 1
Ocerllaris clown x2
Blue spotted Toby puffer x1
Tomini tang x1
Flame hawk x1
Red legged hermit crab x 5-10
Snails x 5
Short spine urchin (red) x 1
Conch x 1
Chocolate chip starfish x 2

_Alex_ · May 25, 2013

My booster pump Runs quiet besides a small vibration. And I run my pressure around 90psi. Higher pressure is better. 60psi is like minimum recommended for daily GPD stated. Your unt will run more efficiently with a pressure 85-95psi

-Alex-

JumperAlex · May 25, 2013

Really? I thought running as high as 86-90 psi might blow one of the John guess fittings on my RO. If I set my pressure higher would I make more then 2.5g an hour of water and still at 0 TDS?

90g FOWLR
Foxface lo x 1
Ocerllaris clown x2
Blue spotted Toby puffer x1
Tomini tang x1
Flame hawk x1
Red legged hermit crab x 5-10
Snails x 5
Short spine urchin (red) x 1
Conch x 1
Chocolate chip starfish x 2

JumperAlex · May 26, 2013

Well, I tried running my RO at 85-90psi after I did my water change today...it worked for about 5 minutes and then blew one of the fittings on my RO and flooded the guest bathroom...glad I went to check on it. Girlfriend is ******.

90g FOWLR
Foxface lo x 1
Ocerllaris clown x2
Blue spotted Toby puffer x1
Tomini tang x1
Flame hawk x1
Red legged hermit crab x 5-10
Snails x 5
Short spine urchin (red) x 1
Conch x 1
Chocolate chip starfish x 2