Seachem

Seachem Purigen 100 ml

$9.19$12.16

1194+ bought in the past month

About this item

  • Unique synthetic polymer
  • Regenerable
  • Controls ammonia, nitrites, and nitrates
  • Ranges in color
$9.19
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Product details
BrandSeachem
Liquid Volume100 Milliliters
Item Weight0.14 Pounds
Item FormGranules
ManufacturerSEACHEM LABORATORIES INC
Technical specifications
item_weight0.14 Pounds
departmentUnisex-Adult
manufacturerSEACHEM LABORATORIES INC
item_model_number165
date_first_availableJune 20, 2004
item_package_dimensions_l_x_w_x_h10.51 x 7.6 x 0.75 inches
item_dimensions_lxwxh6 x 3 x 1 inches
brand_nameSeachem
target_audience_keywordFish, fish
directions1. Use Purigen in your filter to remove soluble and insoluble impurities from water. 2. For marine and freshwater use. 3. Purigen controls ammonia, nitrites, and nitrates by removing nitrogenous organic waste. 4. It significantly raises redox and polishes water to unparalleled clarity. 5. Purigen darkens progressively as it exhausts. 6. To regenerate Purigen, soak it in a 1:1 bleach:water solution for 24 hours in a non-metallic container in a well-ventilated area and away from children. 7. Use regular 8.25% hypochlorite household bleach (non-scented, no dyes, do not use a splash-less bleach). 8. Rinse well, then soak for 8 hours with a solution containing 4 tablespoons of Prime or equivalent dechlorinator per cup of water. 9. Rinse well. For freshwater use, soak for 4 hours with a solution containing 2 tablespoons of buffer per cup of water. 10. Original color and full activity should now be restored, and Purigen is ready for reuse. 11. Do not reuse if an odor of bleach/chlorine is detectable. In case of doubt, soak beads in a small quantity of water and test for residual chlorine with a chlorine test kit.
warranty_descriptionWarranty
model_name165
colorMulti-colored
size100 ml
materialPlastic
age_range_descriptionall stages
number_of_items1
styleResin
included_componentsSeachem Purigen, 100 ml
specific_uses_for_productActive
is_discontinued_by_manufacturerNo
product_dimensions6 x 3 x 1 inches; 2.24 ounces
manufacturer_recommended_age1 month and up

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Customer reviews

4.713,336 ratings
  1. 5100%
  2. 40%
  3. 30%
  4. 20%
  5. 10%

Customers say

Customers find that Purigen makes water crystal clear and works quickly to remove tannins, with nitrates dropping from 80ppm to 5ppm.

★★★★★

Important for clear water in a nice aquarium

אליהו מיכאלFebruary 18, 2026✓ Verified purchase

I use it regularly, cleans the water fantastically, the charcoal is the one of the past now we have this product, excellent great does what is required and more, quality (make sure you have a mesh bag it makes it easier) try it and you will not be disappointed all the best to this respectable and serious manufacturer (I am not against charcoal There is room for him too.) Read more

★★★★★

Absolutely a MUST for any aquarium with water

Rob S.December 23, 2025✓ Verified purchase

So this is absolutely incredible. I placed it into the space of my filter. Basically, I didn’t touch the filter, but within the space of the filter I placed this. It fit. It is a fairly small packet. What happened after, is just amazing. My water was crystal clear. It never got cloudy or yellowish or anything of the sort. It literally solved all my issues with the water; and my fish are alive and well. I have glo fish mostly. The packet is lasting me now for almost a year, and I simply wash it once per month or so. Again, the speed with which my water got cleared and clean, and stayed that way, is within a day or so. This is absolutely recommended for anyone with an aquarium. No smell too by the way. Thank you and enjoy guys. Read more

★★★★★

Purigen By Seachem For Unsurpassed Water Quality

Peter SuslockMarch 25, 2012✓ Verified purchase

Considering I've only had Purigen in two filters for less than 48 hours, this review may be too early.However, based on what I've observed so far, I think it may be of some help to others for me to let you know my initial impression.First, there's no filter media on the market that's like it. Purigen is made up of millions of tiny synthetic macro resin absorbent. These absorbents act as lock in sponges in the removal nitrogenous waste. Nitrogenous waste is the waste material from fish and plants that , along with uneaten food left to decompose is the cause enemy # 1 - ammonia. Purigen does more than remove ammonia, it also removes soluble and insoluble impurities from the water at rate of 500% more than any other product on the market. It also increase the Redox Potential in your aquarium. I had to research this, but in a nut shell - Redox is the loss of a molecule or atom to gain another molecule or atom When this happens essential minerals can't be absorbed by the fish, their immune system can be compromised making them more susceptible to disease. Redox Potential is not only a critically important part of keeping healthy water parameters and equally healthy fish - but something that's almost entirely overlooked by hobbyists. Purigen encourage a healthy and balanced Redox Potential in aquariums which helps maintain richer oxygen levels and fend off disease. I chose to try Purigen out in a tank with hazy water, it gets direct sunlight so this has always been a problem. The Purigen itself is like a soft fine powder. I can see why you need to use such a fine mesh media bag of at least 180. The Seachem media bag won't break down, has welded seams and a plastic snap around tie to prevent it from opening under water pressure. (make sure you fill the bag over a sink, that stuff can blow out everywhere) You know when your replacing media or adjusting something inside a canister filter, turn it back on and all the debris that's been stirred up blasts into your tank? Well, that's exactly what happened, I thought I would do a 50% water change and siphon the gravel. But was pressed for time. I return home an hour later and the water is completely clean - and I don't mean just clean but pristine and sparkling. Back in 2010 after I bought my first UV sterilizer, I posted about it here on Amazon. I was amazed at how in 24 hours the water had become so beautifully clear. That was nothing compared to this, it was as if I had my Diatom XL running for 48 hours straight. The water is so absolutely crystal - it's almost surreal. Considering Purigen can be regenerated over and over it's economical to boot. After six months if it's turned a dark brown you soak the entire bag in a 1;1 solution of bleach and water and it returns to it's original state. You rinse it well, soak it in water treated with Prime and you're good to go for another six months. I'm more than incredibly impressed with Purigen and have already ordered more - it's going into every filter we have. Read more

★★★★★

Tannin discoloration begone

AndySeptember 28, 2025✓ Verified purchase

First time user after reading many reviews and mentions here and elsewhere and happy to report it cleared up the tea colored water after adding cholla wood. I had boiled the wood repeatedly so it wasn’t terrible but it made the water cloudy and tea colored. It was easy to add the pre-bagged purigen to the filter and it was very effective. Definitely worth the price - especially as it should be rechargeable to use multiple times in the future. Before and after pictures included, about 48 hours apart. Full disclosure, I put in a new filter to have room for the purigen bag - the one that came with this aquarium was just not big enough to hold it. Read more

Review image 1Review image 2
★★★★★

It works!

Morgan KesselFebruary 17, 2026✓ Verified purchase

Cleared my tank so fast!!! The bag is already yellow brown after two days. My tank went through some changes so this bag put in some real WORK. I ordered a replacement after day 1. :) I have fine floss, charcoal, sponge, and of course media, in the filtration but this was a game changer for crystal clear water. Apparently, once bag turns brown, it’s done working but you can recharge with 1:1 bleach soak followed by a dechlorinator (prime) soak with tank water if you’re resourceful but I’m nervous about bleach products anywhere near my precious media so I’d prefer to purchase another instead. Read more

Review image 1
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