SURVEY: who uses Purigen and CSM+B - The Planted Tank Forum
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post #1 of 29 (permalink) Old 10-01-2012, 11:11 PM Thread Starter
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SURVEY: who uses Purigen and CSM+B

From a different thread we got a bit off topic and began to discuss the use of CSM+B with Purigen. Specifically that the EDTA in CSM+B renders the Purigen harmful after the specified regeneration procedure. I contacted Seachem who had this to say:

"You can certainly use both products in the same tank, however I would not recommend regenerating Purigen once it has exhausted. Instead, you should replace the exhausted Purigen with fresh Purigen in order to avoid contaminating your tank with chloramines.

Any amine based product, including EDTA comprised chemicals, do pose as a problem and should be avoided if wanting to regenerate Purigen for future use."

I suspect that there must be hundreds, if not thousands of users, using both these products because the warning against EDTA is not prominent.

I can't help wonder if this is a real problem, or a "storm in a teacup". I like Purigen but its not cheap and I won't use it if I have to replace it each time with new product.

I'd like to hear from users. Do you use this combination? If so, have you experienced problems after regeneration of the Purigen?
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post #2 of 29 (permalink) Old 10-01-2012, 11:14 PM
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Thanks for the heads up. I was not aware of this at all.


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post #3 of 29 (permalink) Old 10-01-2012, 11:47 PM
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post #4 of 29 (permalink) Old 10-02-2012, 12:59 AM
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I do. Thanks for the info. I was just talking to someone earlier about how I don't see any difference in water clarity when using it and when not.
This may shine some light on why I had massive die offs in a healthy tank. It does somewhat coincide with the time I started using CSMB. What could be some of the signs that the Purigen is contaminated?


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post #5 of 29 (permalink) Old 10-02-2012, 01:01 AM
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I think what he's saying is the EDTA is absorbed by the purigen, and as a byproduct of recharging the purigen, chloramine is released. There should be no danger in using FRESH purigen with EDTA iron sources, just don't recharge and reuse. Purigen is a nice product, it definitely deals with tannins. However, this will make me think twice on using it long term anymore since the bags are not cheap. I was just getting ready to recharge some.


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post #6 of 29 (permalink) Old 10-02-2012, 01:07 AM
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I used them for a while and even recharged them couple of times. I then stopped using it because I didn't like the recharging process. Now, I am using it again since I am not planning to recharge it. Seriously, a half 250l bottle can tread up to 100g for 6 months. If you have a smaller tank, a single bottle would set you up for a year. That's what I am planning to use it. Is cheaper than using activated carbon....


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post #7 of 29 (permalink) Old 10-02-2012, 01:08 AM
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Quote:
Originally Posted by 5BodyBlade View Post
I do. Thanks for the info. I was just talking to someone earlier about how I don't see any difference in water clarity when using it and when not.
This may shine some light on why I had massive die offs in a healthy tank. It does somewhat coincide with the time I started using CSMB. What could be some of the signs that the Purigen is contaminated?

Plants dying or fish dying???


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post #8 of 29 (permalink) Old 10-02-2012, 01:11 AM
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hmm only regenerated twice and not having any problems. i even add extra iron on top of csm.
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post #9 of 29 (permalink) Old 10-02-2012, 01:18 AM
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If this is legit, it could explain a small die-off I had. But only maybe.


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post #10 of 29 (permalink) Old 10-02-2012, 01:28 AM
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Plants dying or fish dying???
Fish


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post #11 of 29 (permalink) Old 10-02-2012, 01:30 AM Thread Starter
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Quote:
Originally Posted by 5BodyBlade View Post
What could be some of the signs that the Purigen is contaminated?
I'm not aware that there are any signs. It would be good if there were.
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post #12 of 29 (permalink) Old 10-02-2012, 01:44 AM Thread Starter
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Originally Posted by TexasCichlid View Post
I think what he's saying is the EDTA is absorbed by the purigen, and as a byproduct of recharging the purigen, chloramine is released. There should be no danger in using FRESH purigen with EDTA iron sources, just don't recharge and reuse.
That's what I understand to be true from previous correspondence with Seachem. If you go their support forum you will see the correspondence under my same user ID regarding regeneration of Purigen using a conditioner containing EDTA.
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post #13 of 29 (permalink) Old 10-02-2012, 02:33 AM
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Interesting. I use Purigen and CSM+B and have recharged it once. I did not see any immediate or long term affects. I have had a few deaths here and there, but I'm not convinced that it would be from the Purigen. However, given this news I will likely stay away from recharging it from now on. Better safe than sorry.
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post #14 of 29 (permalink) Old 10-03-2012, 12:57 AM
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!!!

I use Purigen in one tank, just ordered Miller microplex. Chelating agent: EDTA. Grumble!

Thanks for the heads up. I was completely unaware.
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post #15 of 29 (permalink) Old 10-03-2012, 01:13 AM
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Thanks for the heads up!

I wasn't going to regenerate it anyways tho, I dont have the guts.
Lol!


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A heavily planted shrimp tank is possible!
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