waterfaller1

Hello Seachem,
Can you clear up a disagreement. This is from your website:
"Purigen™ is a premium synthetic adsorbent that is unlike any other filtration product. It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water at a rate and capacity that exceeds all others by over 500%. Purigen™ controls ammonia, nitrites and nitrates by removing nitrogenous organic waste that would otherwise release these harmful compounds. Purigen’s™ impact on trace elements is minimal. It significantly raises redox. It polishes water to unparalleled clarity. Purigen™ darkens progressively as it exhausts, and is easily renewed by treating with bleach. Purigen™ is designed for both marine and freshwater use. This product is sold by volume. Cited weight is minimal weight."
I say this tells me that Purigen is basicly a mechanical & it becomes a biological filtration product after bacteria colonizes it.
Other hobbyists are saying that Purigen is/has a chemical, and that is how it works.
I say if there were chemicals in it, I don't see how regeneration with bleach would be possible.
Can you clarify please?

Seachem

It is not mechanical filtration. As far as chemical filtration is concerned it is not meant that chemicals pull out material but that there is more than a physical removal of material. Purigen is part of the chemical filtration genera. It does not work as an ion exchange resin would typically work. The portion describing the macro-porous nature tell you there is significant internal surface area for more adsorption. It helps control ammonia/nitrite/nitrate by adsorbing nitrogenous waste. The bleach regeneration works b/c it oxidizes the organics adsorbed allowing for regeneration or essentially the bleach reacts with the organics so they let go of Purigen.

waterfaller1

Thanks for your reply.

jgilvey

Thanks for confirming that. As a follow-up, I wonder if you could clear up little chemistry I'm not sure on.

I take this to mean that Purigen does not remove ammonia/nitrite/nitrate directly but, rather, tends to prevent their production by removing organics before they're mineralized into ammonia and enter the "cycle". Would ammonia/nitrite/nitrate be considered "inorganic", and not removable?

Seachem

You are welcome. There is some affinity for ammonia/nitrite/nitrate, but you are correct there is more of an affinity for organics. This is turn does help with water clarity, dissolved organic load, and ultimately ammonia/nitrite/nitrate.

waterfaller1

Hello again. I purchased 100 ml Purigen. I thought I was receiving a bottle, which I was going to put in my Seachem "the bag". My tank is a 20 gal, and this is for 100 gal. Any suggestions on how to use this?

Seachem

If it can fit in the filter the entire bag can go into service without issue.

waterfaller1

Ok..great! Thanks once again.

Seachem

You are welcome.

sailing_derrick

Hi seachem, I have a pouch of 100ml seachem purigen and i have been on your website looking to find out how many times i can regenerate it but cant find it anywhere, would apreciate your help.