SeachemPurigen Freshwater, 250 ml

Ok so I recently had two problems one the filters that came with my rank were hopeless so I had to upgrade to a Fluval 406 which is great by the way. I tried to use as much of the older filter media as possible but fully expected a mini cycle and an ammonia spike due to the change. For the last week I had also been plagued by slightly cloudy water more noticeable when viewing the tank lengthways but still annoying ! So in went the Fluval about three days later in that went the Purigen. Readings taken before the Purigen showed a slight ammonia spike at .25 and nitrites also high and nitrates at about 40 so basically not good! 24 hours after the Purigen went in these were at 0! The other thing as you will see is it has visibly cleared the slight cloudiness after 48 hours this is almost completely crystal clear even when the tank is viewed length way so it works! Apart from this it has also done something which I don't really know how to describe but everything just looks more vibrant it's like I went from standard definition to HD. I think cost wise it's reasonable. Especially when compared to say Chemi Pure which to treat my tank would cost close to 40 pounds with one pouch if Purigen is actually more than enough for my 300 litre tank. I am still running normal carbon as this extends the life of the Purigen and also Purigen fits easily into my Fluval 406.Now for the caution bit. I was actually considering taking one star off for this because I don't think Seachem make this clear enough unless you do your own research which I did but many don't ! Once finding numerous threads on the internet about two serious issues I wrote to Seachem who have clarified and confirmed so this is straight from Seachem.Issue no 1 . Many water conditioners that are used today in water changes contain a slime coat element which contains amines. This could render the Purigen useless. To be on the safe side you need to use a water conditioner which does not have this ingredient like Seachem Prime, or remove the Purigen from the filter during water changes for about 24 to 48 hours. To be clear using a water conditioner that contains amines won't create any toxicity but will reduce the effectiveness of it and also saturate it so it is not capable of being recharged.Issue number 2. If you use a water conditioner containing amines which many do, then if you use this to regenerate your Purigen it will make it toxic and kill your fish. It is hard to know whether or not a water conditioner contains amines one that is safe is Seachem Prime. Amines are not necessarily listed on the ingredients as there are variations of this chemical. I know that the Fluval and Tetra water conditioners are both not safe to regenerate Purigen.What happens if you try to regenerate your Purigen with one of these water conditioners is a chemical reaction which will trigger highly toxic chloramine in your tank. As I do not intend to reuse or regenerate my Pugin this is not a problem for me but I have switched to using a different water conditioner just to be on the safe side. I really do think that Seachem should make this clear to people purchasing this product as the consequences could be catastrophic.I will continue to use this product as it seems to really help with water clarity and chemistry but I will be purchasing a new bag when this one runs out. I suggest if you do want to use this product switch to Seachems water conditions also either Prime or Safe to get the most out of it.

I've never been 100% satisfied with the clarity of the water in my aquarium. I'd heard lots of good reviews about purigen so thought I'd give it a try. . I wasn't disappointed 24 hours later and it was spotless (pic doesn't do it justice). Highly recommend this product.

Don’t leave many reviews but had to for this. I’m brand new to keeping an aquarium and didn’t soak the wood ornaments properly which resulted in tannins. Heard about this product and gave it a go. Put the bag in the filter in the evening and checked back in the morning to find a huge improvement. The bag is still working and I’m sure it will still improve. This is a must have!

I have a lot of bog wood in my tank and it suffered from tannin staining which increased after water changes. I also experienced a nitrate level increase as the tank matured. I initially researched a nitrate reducing treatment when I came across this product which assisted with the nitrate issue but also claimed to remove the tannin discolouration and polish the water. I inserted it into my filter and impressed with the clarity of the water. I am now several days following a filter clean, and the insertion of this product, and the water remains crystal clear. Normally by this stage the water would start to discolour as the tannin leached out of the wood. I initially thought the product to be slightly expensive but on reflection, even without trying to clean it when it becomes exhausted, the initial cost is still acceptable if the product lasts the predicted first time use period that is claimed.

Performance on first use was great, and good value for money, comes in a bag which fitted well in my canister filter. Doesent make the water smell. Was easy to use, but gunkes up quick and never really regenerated for me when collowinv thw instructions. Longevity i think is not an ootion for me hence 4 stars, but product is still vood just not for me.

It comes in a 100g super super fine mesh bag. You can separate it , but I just put the whole bag in my external filter. You can also recharge it, check out videos.It makes water so clear , like glass!Cheap enough to rebuy or recharge again and again.100ml bag fits in most external filters. Can be added to any filter media set up. Put it in with your carbon, last section before the filter floss

Okay so added new wood, so lots of tannins (tannins are not harmful for fish, actually quite good for fish - especially some breeds of fish) but it's an acquired taste as to whether you like the look of it, me personally I prefer clear. This was over the span of 3 days. The first 2 photos were before and after just added puragen. Very cloudy when first added but just sit it out and do nothing. With good flow and filtration (I have the AllPondSollutions UV filter, but not using the UV light currently, only if I have a massive algae bloom which happens more with my larger tank) the cloudiness will clear quickly. The bag is good quality, no rips or holes. However was a squeeze to get it into my filter so have purchased some smaller bags and will split this bag into 2 and put 1 in my smaller tank next to it. Just as added filtration. This can be reset & reused by following instructions. Good value for money for this reason.

Cleaned the tannins right up and made my water lovely and clear. Good price, would buy again.