anglecoral
08/01/2007, 05:56 PM
Can you explain the dangers of chloramines to me .
Is it that a the typical RO/DI system doesn't remove them and there is a meaningful amount in the resulting RO/DI water .
or just that you need to replace the cartridges more often ?
I had kinda forgot about it after i read randys article on it . seemed to kinda come to the conclusion that the typical RO/DI was effective at removing them .
http://www.reefkeeping.com/issues/2003-11/rhf/feature/index.php
I googled it quick but the results i came up with were pretty ambiguous . The ones that said normal carbon filters didn't work of coarse sold a more expensive carbon block that did http://www.thewaterexchange.net/chloramine-water-filters.htm
Unfortunately there are no cartridges that remove the ammonia. Even reverse osmosis won't remove it. One solution offered by an engineer at Calgon Carbon, the manufacturer of catalytic carbon (offered in our whole house filters) designed to reduce chloramines, is to add triple the amount of chlorine to your water which would change the chloramines and the ammonia would be removed. But this isn't a practical solution for drinking water filters. Ammonia, even in very low levels, is a problem for tropical fish owners and those with Coy ponds. Chemicals are available to reduce the ammonia, however filters are not.
Our KDF/GAC filters will reduce the chloramines taste and odor. However, we found a specially designed GAC carbon filter that will reduce more of the chloramines taste and odor than other types of carbon filters, so we are now offering that cartridge as an option in our water filter systems. As an alternative, our double filters: under-counter Model UCD-CB and countertop Model CTD-CB will also reduce chloramines taste and odor using our KDF/GAC cartridge as a pre-filter followed by a 0.5 micron extruded carbon block cartridge.
In spite of what you may have read on the Internet, carbon block filters alone do not effectively remove chloramines, GAC (granulated activated carbon) in the special form, manufactured by Pentek, is effective in reducing chloramines taste and odor in a single cartridge. Extruded carbon block filters alone will only reduce some of the chloramines. However, if you use a combination of GAC and carbon block filters and move the water through the filters at a slower rate, you can reduce the chloramines. Also, chloramines can be reduced with catalytic carbon filter media.
The ones that said normal carbons were effective didn't sell the special ones. http://www.pwgazette.com/problemchloramines.htm
contrary to another widely promoted myth, reverse osmosis units do remove chloramine. In fact, they do it quite well, because any good RO unit contains a couple of carbon filters and the water gets an extra slow pass through the first one.
what is the real deal ? how much of a threat is this to someone with 5 stage RO/DI unit ?
Is it that a the typical RO/DI system doesn't remove them and there is a meaningful amount in the resulting RO/DI water .
or just that you need to replace the cartridges more often ?
I had kinda forgot about it after i read randys article on it . seemed to kinda come to the conclusion that the typical RO/DI was effective at removing them .
http://www.reefkeeping.com/issues/2003-11/rhf/feature/index.php
I googled it quick but the results i came up with were pretty ambiguous . The ones that said normal carbon filters didn't work of coarse sold a more expensive carbon block that did http://www.thewaterexchange.net/chloramine-water-filters.htm
Unfortunately there are no cartridges that remove the ammonia. Even reverse osmosis won't remove it. One solution offered by an engineer at Calgon Carbon, the manufacturer of catalytic carbon (offered in our whole house filters) designed to reduce chloramines, is to add triple the amount of chlorine to your water which would change the chloramines and the ammonia would be removed. But this isn't a practical solution for drinking water filters. Ammonia, even in very low levels, is a problem for tropical fish owners and those with Coy ponds. Chemicals are available to reduce the ammonia, however filters are not.
Our KDF/GAC filters will reduce the chloramines taste and odor. However, we found a specially designed GAC carbon filter that will reduce more of the chloramines taste and odor than other types of carbon filters, so we are now offering that cartridge as an option in our water filter systems. As an alternative, our double filters: under-counter Model UCD-CB and countertop Model CTD-CB will also reduce chloramines taste and odor using our KDF/GAC cartridge as a pre-filter followed by a 0.5 micron extruded carbon block cartridge.
In spite of what you may have read on the Internet, carbon block filters alone do not effectively remove chloramines, GAC (granulated activated carbon) in the special form, manufactured by Pentek, is effective in reducing chloramines taste and odor in a single cartridge. Extruded carbon block filters alone will only reduce some of the chloramines. However, if you use a combination of GAC and carbon block filters and move the water through the filters at a slower rate, you can reduce the chloramines. Also, chloramines can be reduced with catalytic carbon filter media.
The ones that said normal carbons were effective didn't sell the special ones. http://www.pwgazette.com/problemchloramines.htm
contrary to another widely promoted myth, reverse osmosis units do remove chloramine. In fact, they do it quite well, because any good RO unit contains a couple of carbon filters and the water gets an extra slow pass through the first one.
what is the real deal ? how much of a threat is this to someone with 5 stage RO/DI unit ?