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- Product Guides
Petco Filters: Complete Aquarium Filtration Guide
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
Care SheetsMaster Aquatic Plant Care: Lush Aquarium Plants & Happy Fish
Tanks with live plants can be excellent additions to your home, bringing a touch of nature indoors. Learn how to take care of aquatic plants.
Updated on November 6th, 2025
- Home & Habitat
Freshwater Aquarium Plant Maintenance Guide
Learn how to pick the right aquarium plants, substrate, lighting, and fertilizers to ensure that your aquarium plants thrive and stay healthy.
Updated on July 17th, 2026
- Care Sheets
Aquatic Pet Safety: Keep Your Home Aquarium Pets Healthy & Safe
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
- Care Sheets
Freshwater Semi-Aggressive Fish: Top Secrets for a Thriving Tank
Learn how to care for semi-aggressive fish, recommended diet & aquarium setup. Find the right food, supplies & equipment at your neighborhood Petco.
Updated on April 9th, 2026
- Vet Q & A
Where can I find expert help for my fish tank filtration questions?
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
- Health & Wellness
How to treat dirty tap water with iron for a healthy aquarium?
Some iron is necessary for a healthy aquarium, but too much can promote algae growth or impart an unsightly yellow or orange tinge to the water. Reverse osmosis (RO) filters are deal for removing mineral and heavy metals from water but they can be prohibitively expensive. Buying RO water from a local market or pet store is also a possibility but not economically feasible if you have a large tank. The best option may be a Polyfilter, which can be purchased in the local pet store or online. These filters will remove iron or other metals/chemicals and must be changed monthly or quarterly. You can also buy a water conditioner that will precipitate out some of the iron which can then be removed by mechanical filtration. An example of just one is Rid Metals (by Kordon). Follow label directions carefully, perform regular water changes and monitor iron levels with a home test kit or by submitting a water sample for testing.
Updated on September 24th, 2025
- Vet Q & A
What fish tank sizes are included in Petco's $1 per Gallon Sale?
##### What are the dimensions of tanks in the $1 per Gallon Sale? [Here](https://www.petcoach.co/question/?id=411222) are the answers to some of our most frequently asked questions: - What are the dimensions of my new tank? - What kind of hood will fit my new tank? - What kinds of stands will work with my new tank? - What kind of lighting is recommended for my new tank? **Aqueon10G**, **Marineland10G** - Product Dimensions: 20 x10 x12 - Compatible HOODS: Aqueon 20" Deluxe Full Hood - Compatible STANDS: the Brooklyn 10G, Aquatic Fundamentals Silver Vein Scroll 21x11 - Compatible LIGHTING: Aqueon 20" Deluxe Full Hood **Aqueon20 High**, **Marineland20 High** - Product Dimensions: 24x12 x16 - Compatible HOODS: AGA 24"BK VERSATOP GLASS - Compatible STANDS: Newport 20G - Compatible LIGHTING: Aqueon 24" fluorescent strip light or 24" LED light fixture (online only), Fluval Ultra Bright LED Aquarium Strip Light (online only) **Aqueon20 Long**, **Marineland20 Long** - Product Dimentions: 30 x12 x12 - Compatible HOODS: AGA-30"BK VERSATOP - Compatible STANDS: Brooklyn 29G, Winston 29G - Compatible LIGHTING: Aqueon 30" fluorescent strip light or 30" LED light fixture (online only) **Aqueon29G**, **Marineland29G** - Product Dimensions: 30 x12 x18 - Compatible HOODS: 30" BK versatop glass, Aqueon 20" Deluxe Full Hood - Compatible STANDS: Brooklyn 29G, Winston 29G - Compatible LIGHTING: Aqueon 30" fluorescent strip light or 30" LED light fixture (online only) **Aqueon40B**, **Marineland40B** - Product Dimensions: 36 x18x16 - Compatible HOODS: 36X18X16 BLK VRSATOP - Compatible STANDS: Aquatic Fundamentals Upright 50G 37x19 - Compatible LIGHTING: Aqueon 36" fluorescent strip light or 36" LED light fixture (online only) **Aqueon55G**, **Marineland55G** - 48x13x20 - HOODS: 2 of the 24 inch - STANDS: Brooklyn 55G - LIGHTING: Aqueon 48" fluorescent strip light or 48" LED light fixture (online only) *in-store only (We do not ship paned glass)
Updated on September 24th, 2025
- Training & Behavior
Why are my cichlids aggressive and fish gasping at the tank top?
Remove them or provide more cover (plants and hides) for the other fish to hide or escape. When fish hang near the top, it is usually due to low oxygen levels, low water temperature or improper water chemistry. It could be related to the different filter or the water change. Confirm proper water temp and use a test kit to check water chemistry. Ammonia and nitrites should be at 0 ppm (parts per million) and nitrates should be 40 ppm or less. Monitor chemistry closely until you know how the new filter operates. Make sure it is rated for the size tank you have to ensure adequate filtration. Correct imbalances using chemical treatment and additional partial water changes using aged/conditioned water.
Updated on September 24th, 2025
- Food & Nutrition
What fish and supplies are best for a beginner's small tank?
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
