Aquatic Décor & Substrates Deals

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 November 13th, 2025

Home & Habitat

Saltwater Cleanup Crew: Banish Algae, Keep Your Tank Pristine

Visit Petco to learn about cleanup crews and how they can help your aquarium health.

Updated on November 13th, 2025

Health & Wellbeing

Revive Your Aquarium Plants: Fix Nutrient Deficiencies for Lush Growth

Are your aquarium plants nutrient deficient? Petco is here to help you identify different deficiencies such as light, nitrogen, co2, magnesium, iron and more.

Updated on November 13th, 2025

Product Guides

Aquarium Heaters: Types, Wattage & How to Choose the Best

There's a wide array of heating solutions to provide the optimal temperature for your aquatic friends to thrive. Dive in to navigate options & ideal wattage.

Updated on November 13th, 2025

New Pet

Master Small Marine Fish Care: Tank Setup, Food, & Compatibility Guide

Small Marine Fish are favorites with marine aquarists and includes a wide range of species.

Updated on November 13th, 2025

Health & Wellbeing

What are the dimensions of tanks in the $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**, **Marinela

Updated on August 12th, 2025

Health & Wellbeing

Which fish and plants suitable in planted tank (75 litre ) ?....And which substrate use are.....And how to medication apply for Discus and tetra fish in planted tank without harm to plants and biological filter ?

Java Moss, Java Fern, Anubias and Amazon Swords are among the easiest live plants to care for and cultivate in an aquarium. You can use aquarium soil or aquarium sand depending on the species of plant(s) chosen. When medicating fish, it is best to remove them to a hospital or quarantine tank. This will spare live plants as well as beneficial bacterial populations, especially if an antibiotic is used. Medicated food is also an option.

Updated on August 12th, 2025

Health & Wellbeing

I have basic aquarium at home, since 2 days all are not active and seen abnormal, shark, gold, koi are all having bleeding on their body without any reason i know. Suddenly at one time continuously fishes getting die, even I changed water at overnigh

I'm sorry you are having difficulties with your aquarium. There are several issues that should be dealt with right now. They are water chemistry, aquarium size and choice/number of fish. Any new aquarium should be set up and, ideally, run empty for several weeks (usually 4-6 weeks). This is so beneficial bacteria have an opportunity to populate the substrate and filter. These bacteria are necessary to break down wastes that fish will produce. The technical phrase for this is "establishing the Nitrogen cycle". These bacteria will break down wastes into ammonia then nitrites then nitrates. Nitrates can then dissipate or be absorbed/used by live plants. In high enough concentrations, ammonia and nitrites are toxic and can kill fish. Cycling a tank with fish is possible but it increases the risk of loss. Water chemistry should be checked every few days using a liquid home test kit. A water sample can be submitted for testing , but is not as convenient as testing yourself. Most pet sto

Updated on August 12th, 2025

Health & Wellbeing

Hi, I've 8 cichlids (2convict, 2dolphin, 2iceberg and 2livingstonii cichlids) in a 90 liter tank. My 2 dolphin cichlids are very aggressive. They always hit the others and chase them all the time. Should I seperate them or what else can I do? Also,

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 August 12th, 2025

Health & Wellbeing

I would like to know how I can make my goldfish live the longest possible life they can and how to add more decor after I added the water and conditioning today and I am going to go get my fishies I think I am going to go with two but how to properly

Gold fish can make great fish but they can live up to 25 years and require a large tank that may need to be upgraded if they grow too large. Do get at least 2 fish. Here are some links which may help: https://www.petcoach.co/article/chewing-in-puppies-how-to-control-it/ https://www.aqueon.com/information/care-sheets/goldfish https://www.hartz.com/how-to-introduce-new-fish-into-your-aquarium-tank/ I hope this helps and congrats on your new pets!

Updated on August 12th, 2025

Aquatic Décor & Substrates Deals

Ecoscape Reef Rock: Centerpiece Box

Ecoscape Reef Rock: Nano Mixed A Box

Ecoscape Reef Rock: Nano Mixed B Box

Ecoscape Reef Rock: Mixed C Box

Ecoscape Reef Rock: Mixed Branch Box, Fits 40 Gal Tank

Ecoscape Reef Rock: Mix D Box, Fits 40 Gal Tank

Ecoscape Reef Rock: Mix B Box, Fits 40 Gal Tank

Ecoscape Reef Rock: Mixed Shelf Box

Ecoscape Reef Rock: Mix A Box, Fits 40 Gal Tank

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