Can I add DI to an existing RO filter?

[antfarm2000]

I found a good price on a really nice RO filter, except it's only RO...not RO/DI.

Is there anyone that sells De-Ionization filters seperately? Is there some way to hook up a DI onto the end of the RO?

[Siddroww]

Yes you can , but you want it after your RO to help save the DI cartridge . I know that Marine Depot sells them , Its in a book I have at home but I cant seem to find it in their website .

[Siddroww]

Here it is , the 11th item down , $64 .



http://www.marinedepot.com/a_ro_sp_ac.asp?CartId=

[antfarm2000]

How Necessary is the De-Ionization if you have an RO system?

[griss]

Originally posted by antfarm2000
How Necessary is the De-Ionization if you have an RO system?
It really depends on what is in your water. If your water has silicates or phosphates a DI unit will help to reduce these. Personally, I run 2 DI cartridges after my RO.
Griss

[DRT]

you can also hook a tap water purifier (TWP) up to the RO unit as well. Kind of kludgy but it works and is relatively inexpensive.

[DgenR8]

When it was time for me to change my cartridges on my 4 stage RO/DI, I went to www.aquaticReefSystems.com I got all new replacements for my 4 stage and added a 5th stage, a second DI chamber, not to mention a few odds and ends that they threw in just 'cuz I'm a member of RC! They're good folks, and sell good stuff. I forget what the price was on the second DI chamber, but overall, I got a lot of stuff, and didn't feel like I overpayed.

[antfarm2000]

Will the RO alone be able to remove most of the Phosphates?

[DgenR8]

Originally posted by antfarm2000
Will the RO alone be able to remove most of the Phosphates?
I don't think so, I believe the DI is what removes phosphate. I may be wrong, but I don't think so.

[Mandoman]

dgenr8 is right..

The RO will purify water down to a few dozen ppm of dissolved solids. It's not really thorough on silicates and phosphates, so you will want to follow it with a DI cartridge. This should bring the TDS(total dissloved solids) down to less than 5.0 and maybe zero!