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Old 09-19-2018, 06:42 PM   #1
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Purigen bag position inside hob.

Got my first Purigen bag and placed it inside hang on back filter. But i put the bag as last layer. First there is sponge then a sliding filter media and then the Purigen bag. Please have a look if its correct.

https://youtu.be/dO2VNzT7yKU

Or if i need to put bag as first layer?
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Old 09-20-2018, 07:13 AM   #2
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Chemical filtration in the latter stages is best. You donít want the contact surface areas clogged with debris.
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Old 09-20-2018, 03:52 PM   #3
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Chemical filtration in the latter stages is best. You donít want the contact surface areas clogged with debris.
Thanks then my placement is right?
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Old 09-20-2018, 09:31 PM   #4
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Thanks then my placement is right?

Yes. As long as it is AFTER the mechanical filtration.
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Old 09-21-2018, 09:55 AM   #5
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Yes. As long as it is AFTER the mechanical filtration.
It is. Thanks dear.
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Old 09-25-2018, 11:14 PM   #6
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Looks fine to me. I have sponge/purigen/biohome in mine, bottom to top.
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Old 09-26-2018, 04:33 AM   #7
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Looks fine to me. I have sponge/purigen/biohome in mine, bottom to top.
Thanks. Actually i don't see some great difference in water clarity. Maybe too early to say anything? Been over a week since I placed purigen.
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Old 09-26-2018, 06:47 AM   #8
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Thanks. Actually i don't see some great difference in water clarity. Maybe too early to say anything? Been over a week since I placed purigen.

How discolored was the water to begin with? If it pretty clear to begin with, then you might not notice much of a change. I use a white bucket for water changes so that is the only way I can tell how discolored the water is.
I used Purigen a couple of years ago and it really made the water clear, however, it was a losing battle with the amount of driftwood I had in the tank. I stopped using it. Conversely, I also add a handful of dried maple leaves (thanks coralbandit) from time to time to my tanks. They release tannins and other compounds that provide a more natural environment for the inhabitants.
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Old 09-27-2018, 02:51 PM   #9
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How discolored was the water to begin with? If it pretty clear to begin with, then you might not notice much of a change. I use a white bucket for water changes so that is the only way I can tell how discolored the water is.
I used Purigen a couple of years ago and it really made the water clear, however, it was a losing battle with the amount of driftwood I had in the tank. I stopped using it. Conversely, I also add a handful of dried maple leaves (thanks coralbandit) from time to time to my tanks. They release tannins and other compounds that provide a more natural environment for the inhabitants.
Thanks. Water was clear when I put it in filter. Also I want to know is it ok to use Seachem clarity with purigen?
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Old 09-28-2018, 08:27 PM   #10
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Thanks. Water was clear when I put it in filter. Also I want to know is it ok to use Seachem clarity with purigen?

Itís probably okay but I would be curious about the effects of a flocculant on the Purigenís absorption ability.
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