Petco Text Logo
Petco Pet Logo
1 - 14 of 14 results
Relevance
Down arrow icon 1

Get It Today

In Store Only! Petco Perks. Earn $20 Petco Cash when you spend $100+. Activate Now. Ends 10/31/26. Terms Apply.

Ends 10/31/26. Terms apply.

20 to 39 Gallon Fish Tank Kits

Setting up your first aquarium can be an exciting adventure and Petco is here to get you started in your underwater adventure. Having the correct filtration and operational components like a power filter and aquarium heater, for tropical fish, is critical to ensuring they thrive. You will want to select a sturdy aquarium stand as your fish tank can weigh well over 100lbs when setup!

When choosing a location for your aquarium it is best to prevent any direct sunlight, this will help prevent algae growth and overheating. Choosing the décor is a fun and personal choice, only limited by your imagination. Décor provides hiding spaces for aquatic life and also provides surface area for beneficial bacteria to grow, helping maintain the balance of the nitrogen cycle.

When it’s time to start picking out fish for your new fish tank species, such as tetras, mollies, platies, danios and guppies are a couple suggestions for the first time aquarist. Taking your time, setting up and choosing the right items for your fish tank will provide years of enjoyment.

Frequently Asked Questions

A 20 gallon long tank dimensions are 30"L x 12"W x 12"H. A 20 gallon high tank is 24"L x 12"W x 16"H.

Water weighs approximately 8.5lb per gallon. When full of substrate and decor, a 20 gallon aquarium can weigh close to 200lbs.

Standard 29 gallon fish tank kit dimensions are 32.25″L x 14.25″ W x 20.63″ H.

Related Articles & Questions