WDEFUN Aquarium Filter Media, 300 ml 2 Packs with Free Mesh Bag Organic Filtration Resin, Remove Driftwood Tannins Suitable for Freshwater and Saltwater Fish Tank

I have to say i am quite impressed with this product. After one week of use my tank is as clean as ever. I usually have to scrape some algae off the glass but now there isn't a single speck. I know that's not what it is for but I am surprised at how clean everything is and my fish are doing great.

I cannot believe how quickly this cleared up my tank and kept it clear. It's amazing. I use this in all of my tanks now!

Wow. I have 2 red ear sliders. (Turtles). And they can be dirty. Nasty creatures. I use to use activated carbon. But it felt like I was wasting money. I tried these. Now I can go a lot longer on filter change. Great product.

Update - this product did remove the tannins from my aquarium water. I will change my rating from a 2 to a 4. I won't give a 5 because of the labeling issue. It should be corrected for future customers.I just got this. I was very annoyed when I got my product. The directions for use where not at all correct. It seemed I bought the wrong product or I was shipped the wrong product. Thank goodness I read through the reviews and learned I wasn't crazy. Others found the same thing. I hope Amazon is passing this on the the manufacturer. This should be immediately corrected.I have a lot of tannins in my aquarium. I will give this some time to see how well it works. I will provide an update. I giving it a low satisfaction rating for now.

These are great for clearing up issues in an aquarium. Give it a few days and your water will be crystal clear

I had a tank that had an uncontrollable algae bloom. I ended up starting fresh and adding some other equipment to keep algae away. I introduced this resin to improve filtration and remove toxins. My tanks are pretty small, so I put this into smaller bags and placed in my filters. My problem tank is the clearest it’s every looked even after 2 weeks with my fish back in the tank. I’ll continue to put in all my filters. Very happy with the clarity of my tanks after introducing.

What's to say?It works like Purigen.It's 6 times the quantity of Purigen at 1/4 the cost.Normally a bag of 100ml Purigen costs about $10 for 100ml.With this you are paying $16 for 600ml! Update: (Has gone up to $18 now.)Now one difference is that it comes in 2 of 300 ml bags which can be hard to fit in smaller filters.But buy a few fine opening, reusable filter bags for cheap and empty some of this packet into those and you've got the equivalent of 6 100ml bags of Purigen.If you have larger filters, you can stop purchasing multiple bags as each one of these reusable bags is three times the size of a single Purigen packet and you get two of them!I love Purigen and it's ability to fine clean my tank water to crystal clarity. But what I've always hated about it was the very high cost of it. This product is so much cheaper then Seachem charges for Purigen and far more useable quantities with zippered bags!I have been using this for over two months now in my 3 aquariums and it has worked just like Purigen and as well!I have recharged this product as I did Purigen. It is rechargeable with bleach soaking and then anti-chlorine dosing. (Prime is the Seachem product for anti-chlorine) and standard chlorine bleach will do. It does seem to take about two full days (instead of Purigen's one day) for the ammonia soak to clean them out as they have more material in each bag. And then a day of heavy Prime dosing finishes it. Have recharged some of these 3 times so far. Each time they are recharged, they perform a little less and stay a little browner just like with Purigen. And unlike Purigen, you get reusable, zippered bags that you can reuse over and over and so you can split some of the quantity into smaller bags for smaller filters.I have already reordered some of this and will likely continue to do so if it continues to be available at the current quantities and cost. As good as Purigen and a lot cheaper!

Definitely not the best. Works decently.