API Crystal Bio-Chem Zorb Filtration Replacement Cartridge

Kevin prior: Works

United Kingdom on Aug 15, 2023

Saperlipoppins: If you keep shrimps and setup a new tank with new driftwood and/or botanicals, I would suggest using these for a couple month during and after cycling. The organics and hydrogen sulfides released by the driftwood and anaerobic bacterias for months even after cycling is complete could be overwhelming for the shrimps and kill them as they are more sensitive than fish (happened several times to me until I actually understood the cause, as all parameters I could test were good - pH, KH, GH, Ammonia, NO2, NO3, PO4, K, Fe, Copper, Chlorine, Oxygen. I use distilled water remineralized with Salty Shrimp Minerals so I now my Ca:Mg:K ratios are good and no hidden heavy metal or unwanted element in the water). I tried Seachem Purigen (didn't work), hydrogen peroxide treatment (in case it was a bacterial infection - didn't work), tried heavy water changes (didn't work). When it happened for the 3rd time in a (cycled) new setup with brand new driftwood and ghost shrimps started to be in distress and dying (fish were completely fine), I went across a thread about this resin that was stating to work against toxic gases. I put the survivor shrimps in quarantine to recover while run this resin for...

United States on May 27, 2022

natalie wood: I put a huge piece of rosewood in my axolotl tank and within 24hrs my 240ltrs of water looked like iced tea. Within 24 hrs of putting just 1 of the pouches in my filter the water is back to crystal clear. I dont know how long the pouches will last, it definately wont be as long as my wood is going to leach tannins but are totally worth the money if you dont like stained water. I was initially concerned adding chemical filteration would effect my axies but theyve not reacted in any way. Theyre eating fine, growing well and still have beautifully coloured gills and its been in a few weeks. Have to add axolotls have very porous skin so any nastyness would easily kill or harm them and other than prime on water change days I have no other chemicals in my aquarium. I will be buying again.

United Kingdom on Sep 26, 2021

Nazario: Funcionan muy bien, lo que si recomiendo es que vean bien su filtro para que quede a la perfección ya que son pequeños y en mi filtro lo uso, aún así funcionan, pero el tamaño puede incomodar a otro cliente

Mexico on Jan 02, 2021

CaseyCasey: So much easier and slightly cheaper than buying at local pet stores.

Usually lasts my 6 gal 1 goldfish tank about a month. I usually have to rinse it out a couple times within the month as it does get clogged up and restricts water flow. You can tell when your filter makes a funny noise. Otherwise these are great filters and last longer than other brands I’ve purchased in the past. Keeps my tank clear and clean.

Make sure to rinse it for at least 1 minute before putting it in. There’s a lot of charcoal dust that comes off.

United States on Oct 01, 2020

Kim: Perfect, as I can't buy them where I live as they discontinued the filters. Fast shipping, excellent!

Canada on May 19, 2020

Anthony Else: Perfect for the little pump in our 2.5gal tank. Be sure to read the directions about rinsing thoroughly before adding into the tank... I missed this on my first one and it left the water cloudy. An easy fix, and they are priced well so I chalked it up as a lesson learned. It has been great since then!

United States on Mar 13, 2020

MartyMcFly: I order this online via amazon because these filters save me about $7 than at my local pet store. Its 18 on amazing and 24 at PetSmart. They work great and keep my fishtank clean.

Canada on Jun 19, 2018

Raquel M.: Recently purchased a 5 gallon tank. It came with a filter included and this is the replacement cartridge for it. So far so good. It does a pretty good job of keeping the tank clean. I usually do a full water change once a week and this filter allows the water to remain clean until my next water change. I wash out the cartridge every time I do a water change and replace the cartridge every 2 or 3 weeks. So far these replacements have worked perfectly. Very happy with it. Will continue to purchase.

United States on May 25, 2016

CantusDomina: These filters do an excellent job of cleaning up the water and bringing it back to crystal clarity. That being said, I personally don't care for disposable filters. I'm more a fan of AquaClear type filtration systems. However, if the tank does get overwhelmed, I find that using this filter along with it's system as an addition to the regular filtration does make tank maintenance more efficient.

Do bear in mind that if you have to replace this filter fairly often, then your tank is likely overloaded. Please do your research, Google makes it super easy, and find out how many gallons can support how many fish.

United States on Apr 11, 2016