RO/DI question

Yes, all local municipalities and rural water providers treat H2O w/ Chloramines.

Chloramines are formed during a reaction between Chlorine and Ammonia.

NH3 (aq) + HOCI -> NH2Cl + H2O

Three forms of Chlorines can form depending on pH ...mono-,di-, or tri-chloramine

NH2Cl + H2O is used to eradicate bacteria, viruses, and microorgainisms in H2O holding tanks/etc.

RO units will not remove Chloramines but, Chloramines can be removed by way of a granular active carbon filter. This filter brings down chloramine concentrations from 2-3 ppm to less than 0,2 ppm. If your RO/DI has a Carbon stage you should be in the clear.
I think Randy has written several articles on this very subject...I will see if I can track one down

 

Here is one from RK Mag. 
http://www.reefkeeping.com/issues/2003-11/rhf/feature/index.php

 

Jim at the Filter guys is VERY well versed on chloramines and says that it is best if you do a double carbon filter to increase reaction time and ensure the chloramines are removed. They actually sell a 2 carbon block set that is used for chloramine removal.

HTH

eins

 

Gotta wonder about that. How many people use a double carbon stage [

 

is it only firefox that gives:

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Or is it this 'not cool' for every browser?

 

You have obviously never dealt with Jim....I called one day to oder a new membrane only to have him ask me a few questions about my system and recomend a couple of things that ended up with me ordering a few things that was about half the cost of a membrane.

BTW...I would appreciate you quit stirring the pot on EVERYTHING I say in these forums.