DI vs RODI

[zulu_principle]

If the TDS is zero from your water purification method are you not accomplishing the same thing ? With RO or without ?

Always learning.


Wendell

[Veng68]

DI will run out faster wthout the RO......... I had a friend who used the "Tap Water" DI unit.......... withour water (no greater then 17 ppm TDS) was able to get 300 gallons a cartridge.

There are ways to regenerate the DI resins but they involve some harsh chemicals and if your not used to working with them............. I would not go that route.

http://www.reefs.org/library/article/twp_recharge.html

http://www.reefs.org/library/article/g_deutschmann.html

Cheers,
Vic [veng68]

[Delphinus]

Is it a newer house? I wonder why the pressure is lower. When I moved into my new place I found the water pressure hugely lower, I found out it's because I have a pressure regulator on the main. I ended up bypassing the regulator for my RO/DI and it improved things quite a bit. I should have bypassed it for my outside lines too because I don't have enough to get two of those tsh-tsh-tsh-tsh sprinklers going properly in the summer when it's time to water the lawn.

Anyhow just a thought, could there be a regulator on the water line?

[EmilyB]

With such a low source TDS I would go the DI route. I actually did that with my first tanks and they were big....used the tap water purifier.

[Rippin]

Originally Posted by zulu_principle

If the TDS is zero from your water purification method are you not accomplishing the same thing ? With RO or without ?

Always learning.


Wendell

TDS does not measure bacteria and viruses. An RO unit will make sure these are cleared from the water as well.

[EmilyB]

Bacteria and viruses???? Sorry but I need some backup infor for that.

[Rippin]

Originally Posted by EmilyB

Bacteria and viruses???? Sorry but I need some backup infor for that.

Which one? That there is bacteria and viruses in water or that an RO unit filters these out?

[Bartman]

If you are thinking of going the booster route, Aquasafe's unit is $85 USD, delivered.

http://www.aquasafecanada.com/accesories.htm

[christyf5]

Originally Posted by Bartman

If you are thinking of going the booster route, Aquasafe's unit is $85 USD, delivered.

http://www.aquasafecanada.com/accesories.htm

Thanks, I think I may well go that route.

As for the bacteria and viruses. I should hope that my tapwater has been treated enough that it doesn't contain any of those. I'm mostly more interested in how available nutrients are for algae fuel.

[littlesilvermax]

Originally Posted by Bartman

If you are thinking of going the booster route, Aquasafe's unit is $85 USD, delivered.

http://www.aquasafecanada.com/accesories.htm

That is a good price, but a couple things to consider:

It doesn't have auto controls (so you have to have it on a timer or only plug it in when you make water)
It only goes up to 80psi (mine goes to 90-110 psi and I get better rejection from my RO that way)