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Your cart is empty.API BIO-CHEM ZORB SIZE 6 Aquarium Canister Filter Filtration pouch uses superior resins and activated carbon to clean and clear aquarium water, removing aquarium pollutants such as colors, odors, and heavy metals. The research-grade resin-carbon blend is up to 3x more effective in clearing water than carbon alone. API BIO-CHEM ZORB corrects poor water quality caused by pollutants that can suppress a fish's immune system, leading to disease or death. Replace every two months, or sooner if aquarium is heavily stocked or colors/odors are detected. Can be used to remove medication from water once disease treatment is completed. Contains one large pouch of API BIO-CHEM ZORB, treats up to 55 US gal of aquarium water. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.
Joe
Reviewed in the United States on May 18, 2025
This filter media specifically has worked wonders on my 40g tank. It completely eliminates color/cloudiness in the water and even stops algae blooms in my tank.
Customer
Reviewed in the United States on March 12, 2025
My new tank started smelling like absolute egg fart. I legit thought we had a gas leak in the house until I realized it was coming from the tank. It was also a little cloudy. The bag was WAY too big for the filter so I sat it in the corner of the tank for maybe 2 weeks- and it made the tank CRYSTAL clear and NO SMELL! 5/5!!! I will buy another to have on hand!
Kindle Customer
Reviewed in the United Kingdom on February 15, 2025
Perfect transaction. First class filter products for my marine fish tank at a great price
Michelle Saint Pierre
Reviewed in the United States on February 14, 2025
I wish it came in a smaller size but this stuff has my tanks crystal clear
lori west
Reviewed in the United States on April 8, 2025
Fast shipping, as advertised :)
Lourdes
Reviewed in the United States on October 16, 2023
The media could not be loaded.
Martin Foster
Reviewed in Canada on January 26, 2023
This product is totally amazing! I use it in my aquariums. After years of trying to find products to clear water colour, reduce ammonia, and minimize the smell, I finally found this one. Within hours I could see the water colour clearing and within 24 hours, it was crystal clear and the smell no longer existed. I originally purchased this to get rid of the tannin in the water from my driftwood. All I can say is I am hooked! I wish I could find it in different sizes.
Cheryl
Reviewed in the United States on January 21, 2023
I had a nitrate spike of 160+ for at least a week, despite 0 ammonia and nitrites. I couldn't bring nitrates down at all even with 90% water change over a few days. This stuff isn't stocked in stores so I bought and cut up nitrate absorbing filter pads but they did nothing. My neocaridina are berried for the first time and I was so afraid the shrimplets would hatch and not survive! This NitraZorb arrived at night and I stuck it in a canister filter right away. By the next morning the nitrates we're cut in half, and at the 24 hour mark were down to somewhere between 20-40!! Now, 36 hours later, it's between 10-20. Although I had only rinsed it lightly in the sink, there was no cloudiness. I did put it on top of a polishing filter in the canister, so perhaps that trapped any particles. I can't recommend this enough for anyone having a nitrate spike! I won't be adding this as a permanent filter because I'm afraid it would kill off all the nitrifying bacteria by removing all the ammonia. But I only use the canister to vacuum the gravel, so will probably run it over night with the NitraZorb every time I do a gravel vac (which clearly hasn't been frequently enough lately!)
Nicole Petricola
Reviewed in the United States on July 24, 2022
I bought this to remove tannins from my tank from driftwood. The water has been tea colored for a month and the regular filter and water changes did nothing.This filter was way too big for my 5 gallon tank. I rinsed it for a long time and decided to set it on top of my filter so the water could just pour over it. The tank water quickly turned black. I panicked and did a 20% water change. My fish seemed to be doing okay, but I still removed it. I cut a hole in it, removed 70% of the carbon, and clamped it back up . I put the smaller bag back after rinsing it 50 times or so.I was nervous about my fish, but I was shocked at the results. Within an hour the water started clearing, and 12 hours later it is crystal clear. Just wow.Moral of the story, make sure this is the right size for your tank and adjust if you need to. Rinse for a long time! It says it doesnt need to rinse clear but rinse as close as you can to clear, it will take a ton of rinsing to get there.I'm honestly amazed at how quickly this totally changed my tank. I wish I had done it sooner! Rinse it well!
Matt
Reviewed in the United States on May 18, 2021
I have a large piece of wood in my 10 gallon tank and I've been dealing with brown, tea-like water for a long while. I found this product to be a helpful way of removing tannins. I left it in my tank for a day near my airstone, and seems to have cleared up the tannins really well! I definitely see an improvement from last night.I wish API would release a smaller version of this. It's advertised that it can fit in most HOB filters, but not the simple aqueon filter my aquarium came with. That's alright though, a single binder clip did the job!4 stars because its clunky and hard to really put anywhere due to its size.
M. Quigg
Reviewed in Australia on February 14, 2021
A1
daniel mangani
Reviewed in Germany on April 27, 2021
Great
Kevin Short
Reviewed in Canada on July 7, 2019
Love this product for active carbon filters
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