Seachem Purigen Organic Filtration Resin - Fresh and Saltwater 250ml

The Purigen & Matrix Bio Media (250ml) combo is one of the most effective upgrades you can make to any aquarium filtration system. Purigen does an incredible job at removing discoloration, organics, and impurities — the water becomes noticeably clearer within a short time, often looking “polished.” It regenerates easily, too, which makes it cost-effective in the long run. Matrix is equally impressive. Its highly porous structure provides excellent surface area for beneficial bacteria, helping stabilize ammonia, nitrite, and nitrate levels. It’s reliable, long-lasting, and works well in virtually any filter setup. Together, these two products create a powerful filtration solution that supports both water clarity and biological stability. If you want cleaner, healthier water and a more stable tank ecosystem, this pairing is a fantastic choice. Highly recommended for freshwater and marine hobbyists alike!

Seachem Purigen is an absolute game-changer for keeping aquarium water crystal clear! I simply place it in my filter, and it attracts and locks in tannins, preventing that unwanted yellow or brown tint in the water. This is especially useful for tanks with driftwood or other organic materials that release tannins over time. One of the best things about Purigen is how long-lasting and reusable it is. Unlike traditional chemical filtration media, it can be recharged with bleach and used multiple times, making it a cost-effective solution for maintaining pristine water clarity. Since using Purigen, I’ve noticed a dramatic improvement in water quality, and my fish seem happier and more vibrant. It doesn’t strip out beneficial minerals like carbon does, which is another big plus. If you're struggling with discolored or murky water, I highly recommend Seachem Purigen. It’s an easy, effective, and reliable way to keep your aquarium looking its best!

Works great, but they should give better instructions on how much to use for tank size. I think I used too much. But no problems yet.

I have two goldfish in a 20 gallon and the bio load was ridiculous. My parms were off the charts. Ammonia and Nitrate was so high I was doing partial water changes daily to keep up. I was using ceramic, charcoal, and sponge in an Aqua Clear 30. Water was always cloudy. So I bought a nylon sock from the store and filled it with about 4 tablespoons of Purigen. I now run ceramic, Purigen, with a small amount of charcoal in a separate bag under the nylon, and foam. The first day I didn't notice a difference in cloudiness but I did notice my fish were more active. My fancy tail which usually just stayed at the top was swimming about. The next day when I woke up it was magic. I had some algae on my plants, it was literally peeling off in sheets! The water was not cloudy at all! Day three, filter sucked up sheet algae that was shloffing off and my water was so clear I could see the glass on the outside needed cleaning! So I did a water test. Ammonia 0, Nitrates, 0, Nitrates under 10ppm. That is almost a complete 360! My fish are happy, my plants are happy, I am happy. Please note, when I bought this I also changed from AquaSafe to Prime. Purigen will need to be recharged every couple of months. Using bleach then Prime. I also added Prime to my Goldfish tank when switching to Purigen. Both are made by Seachem. I can not say 100% if it was my just using the Purigen or if it was the two together that changed my tank. I highly suggest both in unison. Now using in my nano with the same results. Will be using in my SW tank as well. I did not buy their "The Bag" instead opting for a white nylon you can buy at Walmart or the like.

I preach the Gospel of Purigen. I used to work for a high-end custom aquarium installation and maintenance company with a sterling reputation and worldwide recognition within the industry for the quality of their work. Many of their installations were in multi-million dollar homes and businesses where perfection was the only option. Purigen went in every filter if the client's aquarium had A) driftwood or B) could be viewed from more than one side (in which case ANY lack of clarity becomes far more visible). We began using it in most freshwater installations when its virtues became evident. It's an absolute must for removing tannin in any tank with driftwood. You've never seen the color "clear" if you've not used Purigen. It's a clarity that's almost tactile. It's a whole new thing. A couple of usage notes: First, don't skimp on something that is meant to be beautiful. Buy "The Bag" sold by Seachem specifically for this finely granulated miracle. It's reusable and you'll go through a lot of hassle by trying to get around this inexpensive purchase but with far less success. Second, while Purigen is miraculous, it can't fix inexperience, ignorance, or poor taste. If your tank is under-filtered, poorly designed, overstocked, over-fed, or contains dumb fish (freshwater parrots, for instance), you don't deserve this product. Go fix your life. Make your aquarium what it's supposed to be: study good aquarium design, hide the wires and plumbing (or use glassware), do your regular water changes, clean the glass properly, worship at the altar of Takashi Amano, and then, when people who don't care about aquariums go, "Wow, that's stunning," THEN buy Purigen and fully understand that water can look clearer than air.

Made the water crystal clear! Just a bit expensive but 100% effective.

Edit: The tannins from the driftwood and Indian almond leaf were acting as a buffer, keeping my pH stable. Shortly after adding Purigen, my snails started croaking. My pH has remained consistent all that time until now (tap is pH 7.6, neither hard nor soft.) I've dosed a few times with pH neutralizer, but can't get the pH higher than 6.0. Also, the Kh is now low... Long story short: I'm going to move the snails to a different habitat, and keep a close watch to be sure my pH doesn't continue to drop. I got this to remove tannins from driftwood in my 30gal tall that's been cycled for 5yrs. My betta sorority is so colorful, it seemed a shame to dull their shine 😊 The before pic was right after a 25% wc, so it's not as tannic as usual - but still like weak tea. Less than 36hrs later, and the water is close to crystal clear! No effect to pH either (*see edit.) I like too, that it can be regenerated (but I probably will just renew it instead. But that's a great feature if you have a very large, or multiple tanks.) I used 2T in a nylon stocking as the top layer in an Aquaclear hob. Bottom to top: coarse sponge, fine sponge, ceramic biomedia, purigen; coarse sponge on intake tube. Note: be sure to rinse this well before adding to your filter. It is a little "floaty," but I expect this will go away with time. It hasn't escaped the hob though.

I purchased some pieces of malaysian driftwood which released tannins into my tank turning it into black tea color. After reading some online articles, people were recommending boiling and/or soaking the wood to release most, if not all, of the tannins. Additionally, it was recommended to do water changes until the wood stops releasing tannins over time. So I tried this... This advice was a bunch of nonsense. I boiled the driftwood on 3 separate occasions for at least 2-3 hours each. Afterwards, I soaked the wood in hot water overnight. I put the wood in the tank and boom, back to the tea color. I was disappointed because I wanted driftwood in the tank but I didn't want any discoloration of the water. I was resigned to the fact I would have to remove the wood. I somehow stumbled upon people mentioning purigen to remove tannins. So i tried this. Absolutely works 💯. Within a couple of days it started to get noticeably clearer and within a week the tannins were gone. I checked the purigen and it had turned dark brown (it's white when its new). At this point I'll have to either try the recharging process or buy new. This stuff works.

Muito bom

Use this in all my filters in my heavily overstocked tanks as part of my quest to always have perfect water clarity. I have 3 or 4 filters depending on the size of my tank mainly because I do overstock them but together with my cleaning routine and using this product my water in my tanks are spotless. If i turn the filters off before feeding my fish look like they are just floating in air and visitors often comment on how clear my water is. Despite being overstocked my fish appear healthy and are long living and I put this down to several things including the effectivebess of using this product. A little goes a long way so in my mind at least I think this Seachem product is good value for money and I wouldn't be without it.

ينحط في اكياس قماشية وينحط بالفلتر وينقي لك الحوض من كل المواد العضوية ويخلي الماء صافي بشكل مرعب

Works really well to clean up the aquarium. Worth every penny

I got back into the hobby, discovered Purigen, and wow... sucked tannins out of the water from some heavy driftwood. It darkened quickly but I recharged it with bleach as per instructions (was nervous at first), but now I have recharged many times. I run 4 bags in my 6ft's sump, and a 100gm bag in 2 others (one in internal, one on HOB). In the sump it's directly under the inflow after the filter floss/wool. Water pristine, no ammonia or nitrites to speak of. And nitrates kept at healthy levels. Haven't had any fish loss other than from a few that were eaten! I no longer run carbon either as this does the job.