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Discover the fish tank filter system that’s right for your aquarium. Learn about mechanical, chemical, and biological filtration at Petco.
Updated on June 19th, 2026
Learn how to care for large marine fish, recommended diet and habitat setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026

What is activated carbon and should you add it to your aquarium filter? Learn about activated carbon's uses, maintenance, and how to add it to your filter.
Updated on July 17th, 2026
Learn how to care for Boxfish & Cowfish, recommended diet and aquarium setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026
Learn how to safely handle your aquatic life to avoid toxin & bacterial exposure. Find aquatic life care supplies at your neighborhood Petco pet care center.
Updated on October 23rd, 2025
Without anything to use for scale, it is hard for me to tell how big your tank is, but in general it seems very small. Also, the water that is in the tank appears very cloudy right now, so that would be the first place to start. Water quality is very important, and will make or break your ability to house and care for fish. I would recommend getting a good filter system (you can visit a local pet store to assist you with brands in your area, as I am not familiar with what you can get in India). Be sure to bring the measurements (height, length, width) of your tank, or the gallons or liters so they can tell you what capacity of filter you will need. Everything else will depend on what types of fish you get - if you plan on getting multiple fish, they will need to be small - a general rule of thumb is one square inch of fish per gallon of water. Depending on the species you get, you may need to also get a bubbler to ensure there is enough oxygen in the water for them, and you will also likely need to get some sort of substrate for the bottom and cage furniture (different species have different air requirements, and some are secretive and like to hide). You may also need a water heater, depending on the species you would like to house. But, depending on how small your tank is, it may be hard to get a water heater that will fit. The food type will also depend on what species you get, as there can be differences in diet type between species. I hope that gives you a place to start, and good luck!
Updated on September 24th, 2025
How frequently to change the filter depends on what type of filter you have. There are mesh filters that filter large particles of uneaten food, feces, etc. - these often just need to be rinsed to remove the material and that is it. If they get damaged in any way, that is when they need to be replaced. Other filters that remove toxins - often carbon filters or ammonia filters, have a set time frame that they should be changed with. This time frame is often set by the manufacturer, and usually ranges between 1-3 months, but you can look at the package or talk to the pet store where you purchased it for more guidance. The biological filter, which is made up of a surface for bacteria to live on, usually don’t need a great deal of cleaning as you can kill all of the good bacteria. I hope that helps to answer your question - if you need further assistance, I would recommend a store with fish experience, or we can do a consultation together here as well! Good luck!
Updated on September 24th, 2025
You can angle it so water flow is directed against the side of the tank. Another option would be to make, or buy, a spray bar. This will significantly decrease water flow. A good old fashioned sponge filter set up can also be used. Lastly, you can opt for no filter. You'll need to monitor chemistry closely and perform more frequent water changes though. The websites below are excellent resources for additional information. https://www.caudata.org https://www.axolotl.org
Updated on September 24th, 2025
You should contact by email the administrators of the website (you can find general email on the contact section) and they put you in touch with the Head Vet in charge of hiring new experts. Best of luck and hope to see you joining the team soon. Dr. Orioles
Updated on September 24th, 2025
A fish tank will need a filter, a light/hood and a heater. Make sure the filter is rated for at least twice the tank volume. The heater should be adjustable since water temperature will depend on the species of fish. Good "starter" fish include Tetras, Mollies, Danios or Tetras. A new tank should be set up and left running empty for several weeks before adding fish. A pinch of flake food can be sprinkled in daily. This "cycling" will allow a population of beneficial bacteria to colonize the tank and filter. These bacteria will break down wastes (ammonia, nitrites and nitrates) which are toxic to fish.
Updated on September 24th, 2025