Purigen is it magic?

[Spare time]

Do they?

Lemme rephrase that. I double checked and they say it's not a simple ion exchange resin, and is extremely selective for nitrogenous compounds. Chemipure and purit have something more akin to if not literally an ion exchange resin.

Your are right in that they do not say it is specifically not an anion exchange resin, but imply that it is something that leaves most of everything alone except for tannins and nitrogenous waste.

 

[Spare time]

To make things even more interesting, certain brands of Fluconazole specify you can use Purigen as a way to remove it from your system.

The plot thickens

 

[Malcontent]

The description of Purigen doesn't sound too different from the typical tannin removal resin:

Aldex CRA is a strongly basic, type 1 anion built on a macroporous, cross-linked acrylic polymer matrix having quaternary ammonium functionality. The porous structure allows more efficient removal of large organic molecules using both adsorption and ion exchange properties to capture those contaminants. The acrylic polymer matrix allows for excellent adsorption and desorption of natural organics matter from surface water when regenerated with NaCl or an alkali solution. Aldex CRA is used in potable water applications to remove tannins or color bodies and may also be used as an organic scavenger in industrial systems. In nonwater installations Aldex CRA may be used in series flow with styrenic macroporous resins to remove a broad spectrum of organic compounds found in sugar juices and cane syrups, citric acid purification and capturing metal complexes.

Aldex CRA Macroporous Strong Base Anion Exchange Resin - Acrylic

Aldex CRA is a strongly basic, type 1 anion built on a macroporous, cross-linked acrylic polymer matrix having quaternary ammonium functionality. The porous structure allows more efficient removal of large organic molecules using both adsorption and ion exchange properties to capture those...

aldexchemical.com

 

[LegendaryCG]

Whatever it does it works really well.

 

[Spare time]

The description of Purigen doesn't sound too different from the typical tannin removal resin:

Aldex CRA Macroporous Strong Base Anion Exchange Resin - Acrylic

Aldex CRA is a strongly basic, type 1 anion built on a macroporous, cross-linked acrylic polymer matrix having quaternary ammonium functionality. The porous structure allows more efficient removal of large organic molecules using both adsorption and ion exchange properties to capture those...

aldexchemical.com

Interesting. Thank you for that info. I rescind my comment


I think you might have solved the thread with that lol

 

[Malcontent]

The last time I delved in this I noted that some manufacturers recommended regenerating early and often with chloride rather than waiting for it to get really nasty and then having to use bleach (which shortens the lifespan).

I don't use the stuff otherwise I would buy some alternative tannin removal resins and see how they performed.

 

[Reef.]

Where do the tannins come from in a reef tank? Aren’t they found mainly in plants?

 

[Reef.]

It's just an anion exchange resin optimized for tannins.

From Seachem site...

It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer

I’m back to being lost, thought I was getting somewhere then

 

[Reef.]

Whatever it does it works really well.

apart from water clarity what is it doing ready well and how can you judge?

 

[LegendaryCG]

apart from water clarity what is it doing ready well and how can you judge?

It captures organics waste.

 

[Reef.]

It captures organics waste.

oh dear!

 

[LegendaryCG]

It’s an organic scavenger resin. It is similar to how deionization or water softening works but is targeted at nitrogen molecules. Not sure why everyone that doesn’t understand something acts like it’s fake.

Scavenger resin - Wikipedia

en.wikipedia.org