For the ultimate in convenience, choose Assembled Whisper® Bio-Bag® Cartridges. Like the unassembled, the packages are color-coded, making it easier than ever to remember which size to purchase. Medium- PF10 Power Filter and 10i Internal Large- 20, 30,40 and 60 Power Filters and 20i & 40i Internals XL-Whisper 4 and 5, TetraTec 300 and 500 58. 25 by from 55 by from 45 by from 55 by from 55 by from 55 by from 55 by from 15 by from Which way should the filter face? The cartridges in the link provided to not have a particular direction that they face; they can be installed either way. BREX What size are the small filters? If you want the dimensions, they are on the product page. BREX How often do I replace the filter Approximately every 3-4 weeks, depending on the number and types of fish you are housing.I need to buy Filter Cartridges Small 6 Pack for 1.5 Gallon Aquarium ? We do not sell direct. BREX When we purchased our 2 1/2 gallon aquarium it came with a bag filter.

 Where can I find the bag type filter?  The one with a plastic grid clog up rapidly.  I prefer the bag type of filter.  We use TetraMin food. We appreciate your support of Tetra products! If you are referring to the Whisper Bio Bag filter cartridges, they are available at most fish and pet stores, as well as many online vendors. You can find a local store by clicking on the Buying Options tab at the bottom of any page on our site, and entering your zip or postal code. BREX what's the difference between the bio bags and the Carbon Filter Cartridges? What is in the bio-bags? They both contain the same carbon, the difference is the bio bags have a plastic frame and clip, and open at the top while the Carbon Filter Cartridges do not have a frame and are closed all the way around. They also use a different fiber for the bag. The first is for our Legacy Whisper filters, the second one is for the EX filters. BREX How many ounces of carbon are in the medium and large filters?

Is it okay to add more? Yes, as long as you don't add so much you cause the filter to overflow. BREX Which size filter has blue plastic on it? The large size Bio Bag has a blue frame inside it with a blue clip on top. BREX Whisper® Assembled BioBag Filter Cartridges Questions - page 2 Whisper 3i Filter Assembly and InstallationWhisper Internal Filtration Assembly and InstallationMars Fishcare is passionate about fishkeeping, and about supporting the fishkeeping hobby. We have been a pioneer in the aquatics industry for more than 50 years, researching and developing quality products to help people create and enjoy their aquariums and ponds. Mars Fishcare is committed to making a difference to our planet and its people by providing innovative, scientifically proven fishkeeping solutions. �/� Trademarks � Mars Fishcare North America, Inc. and its affiliates 2016. Other trademarks are property of their respective owners.Terms and Conditions | Notice to Parents |

The third type of filtration -- biological aquarium filtration -- is the most important of all. The lack of effective biological filtration is probably responsible for the deaths of more fish than any other cause. The particular dissolved compounds controlled by biological filtration are very toxic to fish even at low concentrations. In newly set up tanks, the effects of these compounds can kill fish very quickly. cheap aquarium vacuumIn aquariums that have been running longer but are overstocked with fish, there can be constant low levels of these compounds in the water. cheap aquarium dubaiThis creates chronic, long-term physical stress, resulting in diseased and dying fish.fish tank buy melbourne

To understand biological filtration, it is necessary to understand a basic process in the aquarium: the nitrogen cycle. Ammonia is one of the key elements in the nitrogen cycle. Fish produce ammonia directly both as a by-product of respiration and as a waste product from the digestion of foods. Solid wastes are also converted into ammonia, which is why it is important to remove them with mechanical filtration. 3ft fish tank in litresUneaten food, plant materials, and other organic items that decay in the tank are also converted to ammonia.3ft fish tank cardiff Ammonia, a nitrogen-based compound, is extremely toxic. 3ft fish tank and stand for saleIn an aquarium, it can build up quickly and threaten all the fish in the tank.

Nature, as usual, has a solution to the problem. A species of bacteria known as Nitrosomonas will actually consume ammonia, as long as there is enough dissolved oxygen in the water to support the bacteria. Nitrosomonas bacteria are everywhere, so you don't even need to add them to the aquarium; they will grow there naturally. However, it takes them a while to multiply to a population size capable of consuming all the ammonia in the water. As the Nitrosomonas consume the ammonia, they convert it to nitrite. Nitrite is also toxic to fish and in the long run tends to be a larger problem than ammonia. Another species of bacteria, Nitrobacter, will consume the nitrite and convert it to nitrate, a relatively harmless compound that can be used up by plants and algae. As with Nitrosomonas bacteria, it takes some time before the Nitrobacter are able to multiply to sufficient numbers to handle all of the nitrite. Unfortunately, until the Nitrosomonas are able to increase to numbers sufficient to control the ammonia in a new aquarium, the high ammonia levels inhibit the growth of Nitrobacter, thus allowing the nitrite levels to increase quickly and remain high.

While it may take a week or less for the population of ammonia-consuming Nitrosomonas to grow to sufficient numbers, the delay in Nitrobacter growth means it can be six weeks or more before nitrite is under control. This process of starting the nitrogen cycle, which generally takes a total of six to eight weeks, is known as "breaking in the tank." If there are too many fish in the tank during this process, and not enough water changes are made, many of the fish will die. This situation is known as "new tank syndrome." It's also the reason so many new hobbyists are unable to keep their fish alive and healthy. Some aquarists report that they successfully break in their tanks using fish, but add a one-step water conditioner that neutralizes the toxic ammonia. The neutralized ammonia can still be consumed by the Nitrosomonas bacteria so they can multiply, but it will pose no danger to the fish. However, the Nitrosomonas bacteria will still produce nitrite, and the fish will have to battle the increasing concentrations of that chemical until the Nitrobacter colony is established.