If you’re in the market for 20 gallon aquarium, you won’t want to miss our Best 20 gallon aquarium list in 2023. Our carefully curated selection is based on 87141 customer reviews gathered from all around the world – giving it a truly global perspective!
See what others are raving about now and make sure that your next purchase will be one of lasting value.
Bestseller No. 1
Tetra Aquarium 20 Gallon Fish Tank Kit, Includes LED Lighting and Decor
- Tetra Glass Aquariums are made in the USA and are built to last with scratch resistant glass
- The Tetra Aquarium comes loaded with an LED hood, that provides a natural daytime effect and a Whisper Filter that is whisper quiet while providing powerful, dependable water flow
- Artificial Plants add a unique, natural ocean feel while giving your fish a place to hide which reduces fish stress
- The Tetra Kit includes: one 20 Gallon Glass Aquarium, one LED hood, one Tetra Mini UL Heater, one Tetra Whisper 20 Filter, one artificial Boxwood Plant Mat, four artificial plants. Add gravel and fish to complete your aquarium
- Aquarium Dimensions: 24.2" L x 12.4" W x 16.7" H
SaleBestseller No. 2
Aqueon Aquarium Fish Tank Starter Kit with LED Lighting 20 Gallon High Fish Tank
- All the equipment needed to get started in one box
- Kit includes: glass aquarium, low profile LED hood, QuietFlow power filter, filter cartridge, submersible preset heater, premium fish food sample, water conditioner sample, fish net, thermometer and setup guide
- Preset heater will keep your aquarium temperature at a constant 78 degrees, appropriate for most tropical fish
- Low profile full hood contains vibrant cool white LED lighting to bring your aquatic environment to life
- Filter has a red LED light that flashes to indicate when it’s time to change the cartridge
Bestseller No. 3
Tetra ColorFusion Aquarium 20 Gallon Fish Tank Kit, Includes LED Lighting and Decor
- Let the LED light transform your aquarium with each color change. Pause the cycle on any color to fully customize your aquarium
- The anemones sway with your filter current and give your fish a place to hide and relax
- Tetra plants come to life under the glow of Color Fusion LED
- The Tetra ColorFusion Kit includes: one 20 Glass gallon Aquarium, one aquarium hood, one UL Heater, one Tetra Whisper 20 Filter, one Color Fusion Universal Color Changing LED, two Wonderland Plant Multipacks, one Blooming White Anemone
- Aquarium Dimensions:24.2" L x 12.4" W x 16.7" H
Bestseller No. 4
All Glass Aquarium AAG10021 Tank, 20l
- High quality glass construction with dimensions 30.25" x 12.5" x 12.75"
- For freshwater and marine applications
- Clean silicone edges (select sizes available in clear or black)
- Always include a drip loop when plugging aquarium appliances into the electrical outlet
- Place aquarium on stand able to safely bear the weight of a filled aquarium
SaleBestseller No. 5
Tetra Whisper IQ Power Filter 20 Gallons, 130 GPH, with Stay Clean Technology
- QUIET AQUARIUM FILTER: The Tetra Whisper IQ Power Filter with Stay Clean technology contains a sound shield for quiet filtration less than 40 dB.
- SELF PRIMING: Submerged motor starts up with no priming required.
- CAPACITY: The Tetra Whisper IQ 20 Power Filter works in filters up to 20 gallons (130 GPH).
- STAY CLEAN TECHNOLOGY: By maintaining healthy pH levels, creates easier maintenance for healthier fish.
- CARTRIDGE REFILLS: Change cartridges monthly; uses large-sized Tetra Whisper Bio-Bag Filter Cartridges (refills sold separately).
Bestseller No. 6
Aquarium Tank, Glass, 20 Gal
- Our all-glass 20-gal aquarium has sides and a bottom of triple-strength, clear glass welded together with silicone rubber. This strong, leakproof aquarium will last for years and is nonreactive with seawater. Top frame is designed for a recessed cover (see item #671235 Aquarium Cover). Dimensions: 24 x 12 x 16" H.
- From our beginnings in 1927, Carolina Biological Supply Company has grown to become a leading supplier of science teaching materials for all levels of education. Today, from our headquarters in Burlington, North Carolina, we serve customers worldwide, including teachers, professors, homeschool educators, hobbyists, and professionals in health and science-related fields.
- When you shop with Carolina, you're not alone! All of our products are backed by unparalleled technical support, available from 8am to 6:30pm, ET, Monday through Friday. Live chat is available from 8am to 5:30pm ET, Monday-Friday. Contact information (Live Chat, email, and phone) is provided after placing your order at Amazon.
Bestseller No. 7
Nano Rimless - 20-Gallon // All-in-One Aquarium
- The new JBJ Nano RL is an all-in-one aquarium designed with the hobbyist in mind. The integrated sump and included filtration media make it easy to start your own aquarium!
- Our new streamlined design is engineered from solid glass and features stunning glass clarity. Available in 10, 15, and 20 gallon capacities.
Bestseller No. 8
SeaClear 20 gal Acrylic Aquarium Combo Set, 24 by 13 by 16", Clear
- Combo includes aquarium, reflector and electrical 15" light fixture
- Acrylic aquariums are clearer than glass, 17 times stronger, and only half the weight!
- More impact resistant and less prone to chipping or cracking than glass, making it safer around children and pets
- Safe for Salt or Freshwater
- You won't believe how your fish and decorations will pop when viewing this beautiful SeaClear aquarium
Bestseller No. 9
Tetra Aquatic Turtle Deluxe Kit 20 Gallons, aquarium With Filter And Heating Lamps, 30 IN (NV33230)
- COMPLETE aquarium KIT: 20-gallon tank is ideal for aquatic turtles, and this kit includes all the essentials needed for success, including a decorative filter with cartridges, basking platform, heating lamp, boxwood plant mat and screen top.
- INCLUDES WATER FILTER: Decorative ReptoFilter instantly creates a beautiful waterfall while keeping water clean with 3-stage filtration.
- HEATING: Dome lamps are incorporated into the screen top for warmth and prime basking.
- CONVENIENT: Includes Tetra food and water care product samples – everything you need to get started.
- DIMENSIONS: aquarium measures 30 inches wide x 12 inches deep x 12 inches tall.
Bestseller No. 10
SeaClear 20 Gal Acrylic Aquarium Combo Set with LED Lighting, 24" L by 13" W by 16" H, Black
- Combo means: The Aquarium and LED lighting are both included. The LED lighting is 24" and expands to 30".
- SeaClear Acrylic Aquariums are clearer than glass aquariums and has exceptional clarity allowing unobstructed views of the underwater environment you create
- Acrylic is 17 Times Stronger than Glass and half the with of glass aquariums. Much more Impact Resistant making it less prone to chipping or cracking than glass, making it safer around children and pets
- Black means the back of the aquarium is black, it also comes in blue back or clear back. The color enhances the beauty of the fish, decoration and plants. Safe for Salt or Freshwater
- This Sea Clear Aquarium is beautiful and you won't believe how your fish and decorations will pop when viewing your aquarium
Bestseller No. 11
Marina Aquarium Kit - 20 gallon Fish Tank - LED
- 20 U.S. gallon glass aquarium
- Includes a Marina Slim S20 clip on filter with quick change filter cartridges
- Includes everything you need to get your aquatic home started
- Measures: 24 inches L x 12.5 inches W x 16.5 inches H
Bestseller No. 12
Midwest Tropical Fountain Aqua 20 Gallon Tower Square Aquarium Kit
- Unique floor aquarium
- Features beautiful panoramic seascapes designed for natural interior
- Complete with pump, lighting, extension cord, decorative plants, under-gravel filtration, air pump
SaleBestseller No. 13
Lifegard Aquatics 20 Gallon Rimless Clear Glass Aquarium 6mm (24.40"x12.20"x15.74")
- CLEAR GLASS AQUARIUM: Enjoy the clearest view of your fish while creating a natural healthy environment with Lifegard Clear Glass Aquarium.
- QUALITY CRAFTMANSHIP: Lifegard Clear Glass Aquarium feature an Ultra Clear glue joint using German engineered glue for highest quality, an Insulation pad for tank base protection.
- DIMENSIONS: Length: 24.40" Width: 12.20" Height: 15.74" Glass thickness: 6mm Volume: 20 gallons
- AQUARIUM INCLUDES: A high clarity transparent extra clear glass and a black dense foam leveling mat
- LIFEGARD Brand is YOUR GO-TO RESOURCE FOR AQUARIUM, POND & AQUACULTURE PRODUCTS: Lifegard Aquatics features an extensive line of high-quality aquaculture products that include fountains, pumps, bulkhead fittings and commercial aquatic and pond equipment. From crystal aquariums to full spectrum LED lighting, trust in Lifegard for all of your aquatic needs.
Bestseller No. 14
Landen Aquarium Wooden Stand and Cabinet for up to 20 Gal Tank, Fish Reptile Sea Salt WaterTank Stand, Nano Foam Leveling Mat Included, W17.7xD17.7xH33.9 in,Wooden Matte Black Painted(Stand Only)
- 【Stable and Modern Design】contemporary design, especially for the rimless aquarium, to present a minimalist style. The modern and simple design can match any decoration in your home seamlessly, spacious storage space for large aquarium equipment. Simple style, black and white, embodies the overall aesthetics. The edge of the cabinet adopts German sealing edge treatment technology, making a perfect seamless appearance.
- 【Humanized Features】The black nano foam leveling pad at the top of the stand provides cushioning and protecting. The spring plungers makes the door easy to open and close. Painted matte surface is wear-resistant and scratch-resistant, easy to clean. The hinges are made of 304 stainless steels, which is corrosion-resistant and more suitable for aquariums.The stand has openings in the back for tubing for canister filter and CO2 hoses.
- 【User-Friendly Material】The material made for this cabinet is safe, eco-friendly. The stands use environment-friendly wooden plate, formaldehyde emission less than 0.06mg/m³, zero aldehyde addition in the process of cutting plate, row drill, engraving milling, sealing edge. The surface is using paint made of non-hydrophilic eco-friendly materials.
- 【Easy to Setup】Installation instructions and spare parts are provided in the package. Thanks to its manufacture using CNC opening and CNC precision drilling, the precision is very high, making all the components easy to assemble in minutes.
- 【Specification】Dimensions: W17.7 x D17.7 x H33.86 inches (W45 x D45 x H86 cm); Color: Matte Black Painted; Support: Up to 30 gallons tank. Two stands can be placed side by side to support 60 gallons or larger aquarium tanks.
Bestseller No. 15
Tetra Glass Aquarium 20 Gallons, Rectangular Fish Tank
- GLASS AQUARIUM: Rectangular glass aquarium makes an ideal home for your fish.
- ADD ON ACCESSORIES: Mix and match with your favorite Tetra filtration, lighting and water care products (sold separately).
- EASY CUSTOMIZATION: Use assorted Tetra accessories (sold separately) to make your aquarium your own.
- 20 GALLON TANK: Measures 24 inches wide by 12 inches deep by 16 inches high.
- TETRA BRAND: Dedicated to helping seasoned hobbyists and beginners alike enjoy a successful, lifelong aquatic experience.
SaleBestseller No. 16
Aquatic Fundamentals 20 Gallon Metal Aquarium Stand, Black
- Stand holding capacity: 20 gallons, 200 lbs
- Stand dimensions: 24. 3"L x 12.5"W x 27.8"H
- Powder coated modern black finish, steel construction, moisture-resistant
- Easy to assemble
- Tank not included
SaleBestseller No. 17
Fluval Flex Aquarium Kit, Black, 15 Gallon
- Freshwater 15 gallon aquarium kit with bold curved front design
- 7500K LED lamp supports plant growth and enhances fish colors with fully adjustable White plus RGB LEDs for endless color blends and LED remote can also control fun special effects (i.e. fading cloud cover, lightning bolts)
- Powerful 3-stage filtration for superior water quality and oversized mechanical (foam), chemical (carbon) and biological (Biomax) media included
- Multi-directional dual outputs for customized water flow
- Hidden rear filter compartment and stylish honeycomb wrap conceals water line and sides of rear compartment
Bestseller No. 18
Black Fish Tank 124Gal LED Aquarium Kit Upright Fish Tank Large Glass Fishbowl Glsaa Bar for Patios Living Office Room and Kitchen
- Ships from Cucamonga CA US.Please provide accurate phone number when purchasing large items.After ordering, please pay attention to the seller's information to maintain an effective contact to ensure that the fish tank is smoothly delivered
- 47.3*49.6*15.8in Water Actual Capacity: 124 Gallons. Including professional aquatic LED tri-color lighting source. It can breed marine life, corals, Arowanas, aquatic plants, and landscape water features. Add a sense of luxury to your home or office.
- The fish tank is made of high-quality low-iron tempered ultra-white transparent glass, which can withstand the damage and impact in daily life, and is very durable. Resistant to scratches, fingerprints, and acids/alkali. The visible light transmittance is greater than 91.5%. The thickness of glass: 0.47 inches.
- Suitable for terrace living Office room and kitchen
- The most fashionable design in 2022, every detail reflects the modern design concept. and you can clearly see each aquatic plant. The pet fish swims gracefully in front of you. A better immersive experience. Give your pet water creatures a hide and relax luxury home. Product weight: 390lb. Water Total Actual Capacity: 124 Gallons.
Bestseller No. 19
HiTauing Aquarium Heater, 100W Fish Tank Heater with LED Digital Display & 5 Safety Protection, Submersible Aquarium Heater with 2 Suction Cup and 8.2Ft Cord for 10-20 Gallon Fish Tank.
- 【Aquarium Heater 100W】-- The 100W aquarium heater produces stable power with quick heat up. It's length is 5.9'', voltage 110-120V, power cord is 5.9ft. Aquarium heater for 10 to 20 gallons, ideal uses for the marine saltwater and freshwater, fish tanks, turtle tanks, betta tanks, small ponds, and so much more.
- 【Safe and Durable Fish Tank Heater】--The components of this 100W fish tank heater are designed for safety and durability, and encased in a high-durability ABS shell. The nickel-chromium heating wire and quartz glass are made of high-temperature resistant materials, along with explosion-proof quartz sand, giving the product a high level of safety and durability.
- 【Comprehensive Protection Submersible Aquarium Heater】 -- Our submersible aquarium heater have 2 intelligent protector to avoid damage to the product and its circuitry. ①Over max temp warning, when the temperature is higher than the maximum temperature 94℉/34℃, the code HH appears and automatically stop heating. ②Off-water warning, when the submersible aquarium heater is higher than the level of the fish tank water code E1 appears and automatically stop heating.
- 【Tank Heater with Digital Display and 2 Suction Cups 】 Tank Heaterwith a digital display temperature control system, you can monitor the water temperature and set temperature in real time. Variable temperature settings range: 63-94℉/ 17-34℃. Press and hold the button 3S to switch ℉ and ℃. Each press will ±1℉. Red light is on when heating and green light is on when temperature is hold.
- 【Hitauing Submersible Water Heater Services】 As a brand seller, our main purpose is to provide our dear customers with high quality aquarium heater and to take responsibility for your purchases. We promise to give you a 2-year warranty services from the date of purchase. If you have any problems with our submersible water heater in the future, please do not hesitate to let us know and we will do our best to help you slove it.
Bestseller No. 20
GDLF Fish Tank Stand Metal Aquarium Stand with Cabinet for Fish Tank Accessories Storage, 40 Gallon Aquarium, Turtle Tank, Reptile Terrariums
- Sturdy & Durable Construction: Made with 4cm thick steel powder coated legs. This fish tank stand is sturdy, durable, and moisture-resistant. No need to worry about wobbling like with many other weak stands on the market.
- Holds Two Aquariums: Able to hold one big aquarium on the top shelf up to 40 gallons and bottom shelf can accommodate a second small aquarium (5-10gallon)
- Versatile: Besides the main tank storage, this fish tank stand allows you to store your fish accessories: fish food, fish net,gravel cleaner, water conditioner,etc. All in a no clutter configuration, neat & well-organized.
- Sleek & Modern Design: Black steel legs with powder-coated finish paired with brown P2 MDF cabinet makes this aquarium stand quite high end and easy to match your current furniture décor. Tanks not included.
- Dimensions: Stand Dimensions: 36.6"L x 18.9"W*31.6”H, Stand Holding Capacity: 40 Gallons,660 LBS. Suitable for a variety of sizes of aquariums or terrariums up to 40 Gallon.
Our selection of top-rated 20 gallon aquarium provides something for everyone, no matter your budget. We’re sure you’ll find the perfect item to fit all your needs!
