Seachem Purigen, 100 ml

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.)

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.

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.

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.

Gets tannins out and returns water clear in just a couple of days. Like magic. Lasts a good month for a larger tank, says you can bleach and reuse but I haven't tried that I'd be afraid to. Just popped it into the filter tank. Be careful opening the bag, don't do it with scissors I accidentally cut the first, oh and rinse it before putting it in.

Très bon produit efficace eau cristalline, pour mon aquarium de 110 litre je suis agréablement surpris. Je vous le conseille.

works like magic i have used it for like 2 years now in 2026, i have a bio load of 6 fish in a 60 litre setup with canister filter, ran one pack of 100ml for 9 months straight and tille the last day the water was like crystal clear like as it was on day 1, definately go for it if want crystal clear water in your tank, and one thing, in these 2 years no dead fish in my tank just one death and that was due to jumping out of the tank at night 🤣

Excellent...thank you...

Muy buena marca y producto, combinación de Purigen y filtración, mantienen los parámetros del agua en óptimas condiciones y lo mejor es el agua cristalina que se obtiene.

after putting the purigen, can noticeably see the clarity of the water. very satisfied with the addition of this chemical filter.