|
|
|
|
#1
10/16/2007, 04:09 PM
|
|||
|
|||
|
Color change DI resin VS Food grade
I just got off the phone with Purolite. A big manufacture of DI resin. She asked some questions about how its used in our applications etc. And explained they would not be responsible for the death of any fish due to using color change resin. She said you cannot have color change and food grade in the same resin. The typical "nuclear grade" color change resin is LAB grade not FOOD grade. She said LAB grade is NOT safe to drink.
Thoughts??? Everyone (it seems) uses color change resin, but this woman made it sound as though food grade would be better applied. She could not tell me what it is about lab grade color change resin that causes problems (or if there is a problem at all) but she said it had to do with the dyes used in the color change resin. Anyone have any input? Ive been drinking color change resin water for years, (yes Ive heard it can strip your body of electrilites SP?) Are we best using Food grade non color change resin???
__________________
Feed Your Obsession |
|
#2
10/16/2007, 04:17 PM
|
|||
|
|||
|
If your going to drink it why do you even have it running through your DI ? Bypass DI for drinking water.
If nuclear grade is not suitable for fish then you would have heard about this LONG before now and none of the major ro/di aquarium suppliers would be carrying it.
__________________
I may be dumb but I'm not stupid.... |
|
#3
10/16/2007, 04:36 PM
|
|||
|
|||
|
Quote:
Anyway, the point of my question is if color change resin is not safe for food products, how can it be safe for fish and corals? I just spoke with another person that sells many different brands and styles of resin. He said "we dont recommend using color change resin for a reef tank", I asked why and he said "where do you think the dye goes?" Just becaues "everyone uses it" doesnt make it right. Does anyone know the characteristics of the dye used in DI resin?
__________________
Feed Your Obsession |
|
#4
10/16/2007, 05:56 PM
|
|||
|
|||
|
Again, people have been using for more than 10 years, if there was an issue ( regardless if technical right or wrong ), there would have been sufficient evidence that it is indeed harmful to fish by now.
Having said that, I don't use color changing anyways, if you have a TDS meter you will find the color appears to be exhausted before the tds actually starts to go up. Can usually run it another 30 days ( depending on usage ) before truly exhausted. So if you don't have a TDS meter that is the better way to know when to change.
__________________
I may be dumb but I'm not stupid.... |
|
#5
10/16/2007, 06:43 PM
|
|||
|
|||
|
I would guess people that work with and sell ionic resins would have a better idea of what is safe and what is not.
The problem with the dye could be minor, but could infact be harmful none the less. Obviously its not so harmful its killing reef tanks, but it could certainly be harming them.
__________________
Feed Your Obsession |
|
#6
10/16/2007, 08:05 PM
|
|||
|
|||
|
I have suspected the dye is copper based. Greenish/blue almost always means copper content.
It may be only sligtly toxic, but just because people haven't raised this issue before doesn't mean there isn't some small negative affect. |
|
#8
10/17/2007, 12:03 AM
|
|||
|
|||
|
Quote:
That doesnt sound very promising for "everyone uses color change it must be ok" people. I have in the past, but the color change stops here.
__________________
Feed Your Obsession |
|
#9
10/17/2007, 01:04 AM
|
|||
|
|||
|
The color change isn't necessarily done by dissolving a dye and releasing it into the output water. The Purolite web page seems to indicate otherwise for at least one product:
http://purolite.com/ProductID/39/Fol...uctDetails.htm It's interesting, though, that the representative said that these resins aren't rated for potable water.
__________________
Jonathan Bertoni Last edited by bertoni; 10/17/2007 at 01:57 AM. |
|
|
Linear Mode
