API NITRA-ZORB SIZE 6 Aquarium Canister Filter Filtration Pouch 1-Count Bag, Model:110A

Amazing product!! I was skeptical with the reviews saying it worked within a day - few days ... THEY'RE RIGHT!! My axolotl tank nitrates spiked for some reason (between 10-20) and I was scared I was gonna lose him. Did a water change (TWICE), cleaned everything, rinsed the filters, fed him less, all to no avail. Got this product, followed the directions, and 48 hours later the nitrates level was back to zero! I could not be happier! I did purchase an extra mesh bag to put it in after reading some reviews about how thin the bag was. Haven't "recharged" it yet so I can't comment on that part but I'm buying more to keep on hand. SOOOOO grateful for this product! A+++++

I bought the API NITRA-ZORB to tackle ammonia and nitrate issues in my newly established tank, which was unusually cloudy and had stubborn levels. Despite having cycled tanks, this time was different, and I needed a solution fast.The results were impressive! In just one day, my water cleared up, and the levels normalized. I was surprised at how quickly it worked. I'll definitely be using this again if I run into the same problem.The only downside is the pouch design. As others have mentioned, it’s flimsy and could tear easily, especially when rinsing or adding it to the filter. It’s also a bit large for my Top Fin Silenstream filter, but that's my oversight.This product works! Highly recommend!

My APU test kit confirmed this did the job quickly. Before using, I did research and everything I read indicates its safe for African Dwarf Frogs. That is NOT the case. My fish were all fine, but my ADF's are all severely ill and may not survive.I don't know if it was the product or the fast shift in nitrate refuction, but either way, please use with with caution if your fish have other tank mates.

This pouch is amazing. It brought down our nitrates overnight and we had crystal clear water in just two days of use.The pouch is very fragile so be gentle when you rinse it out! And it does take a while to rinse it…. You need to rinse it until the water runs clear. If you do not rinse it thoroughly it will put sediment in your tank making the water unsafe. This thing is a miracle worker!

Works better than expected. Works fast for me. Leaves no smell.

I was leary to use this due to all the negative feedback but I love it! It works if you have patience. I have high nitrate and nitrites in my well water so I had to get some water from a different source. Test your tap water, if it has high nitrites and nitrates you will always battle this problem. I used Nitra-Zorb on 3 tanks. A 29 gallon tank with 3 fish, half well water and ozarka water. It took well over a month with small water changes to get this tank showing no ammonia, nitrates or nitrites. My second tank ( 10 gallons ) was 50% my water-50% ozarka water with many normal water changes it settled a lot quicker. My third tank ( 20 gallons ) I used 50% water from a friends house and 50% ozarka water with no fish in the tank. This tank took almost 2 months to settle down. It showed high ammonia, nitrites and nitrate levels. How a tank with no fish and a new start up has high ammonia is beyond me.I think the key to my success was follow the directions on the package. You have to recharge it in a salt solution every 5 days ( recipe is on the bag ). Also when you do a water change you have to use Stress Coat and Stress Zyme, Accu Clear products. I also used the API start up kits. The key here is patience! I also use the API Superclean Power Filter 5-20. I use size 6 Nitra Zorb. I have to fold the pouch in half to get it to fit. Once your water tests normal store the Nitra Zorb bag in the saltwater solution.

I’m writing a review before even trying it because i attempted to use it and the packet broke open and spewed into my tank tiny granules and a cloud of white. My fish were eating the granules thinking they were food. Next thing i knew one of the fish was gasping for air at the top of the tank. Be careful. Maybe this is my fault since i should have known the packet was too big for my filter before trying to jam it in, but if you need to, buy smaller filter media bags to put some of it into. I will be doing that.

I bought this to correct a slight chemical imbalance in my tank. I have had a chronic algae problem, unclear water, and have tried numerous solutions, including several UV sterilizers. After a day or two of using this, my tank is crystal clear! I couldn't believe it!