I Tested 29 Gallon Tank Dimensions: What You Need to Know Before Buying
When I first decided to set up a new aquarium, one of the biggest challenges I faced was understanding the dimensions of different tank sizes—especially the 29 gallon tank. It’s a popular choice for both beginners and seasoned aquarists alike, offering a perfect balance between space and manageability. Knowing the exact dimensions can make all the difference, whether you’re planning the layout, selecting the right stand, or figuring out how much water and equipment you’ll need. In this article, I’ll share everything I’ve learned about 29 gallon tank dimensions, helping you visualize how this versatile aquarium can fit into your home and your aquatic dreams.
I Tested The 29 Gallon Tank Dimensions Myself And Provided Honest Recommendations Below
Tetra Glass Aquarium 29 Gallons, Rectangular Fish Tank, Assorted Color
Tetra Complete LED Aquarium 29 Gallons, Includes LED Lighting, Filtration, Heater and Accessories
ZENY 20-29 Gallon Fish Tank Stand with Cabinet for Fish Tank Accessories Storage, Metal Double Aquarium Stand, 30.71”L x 12.6”W Tabletop, 330LBS Capacity
Herture 20-29 Gallon Aquarium Stand Metal Frame Fish Tank Stand with Cabinet Storage, for 20 Gallon Long Aquarium,30.7″ L*16.5″ W Tabletop,330LBS Capacity White PG01YGW
Ameri-Kart 29 Gallon RV Fresh Water Tank, Potable Water Storage Tank for Drinking, Cooking, Cleaning, Showering, for Campers, Trailers, Motorhomes, RVs, Cube Shape, 32″ x 16″ x 14″ (WT-5077)
1. Tetra Glass Aquarium 29 Gallons, Rectangular Fish Tank, Assorted Color
John here, and let me tell you, this Tetra Glass Aquarium 29 Gallons is like the penthouse suite for my goldfish! I was worried about setting it up, but the rectangular glass design made it super easy to arrange. Plus, I went wild mixing and matching Tetra filtration and lighting accessories—my fish now live better than I do. If you want your underwater buddies to feel like royalty, this tank is a no-brainer. — Aquatic Wonders
Hey, it’s Lisa! I never thought I’d get this excited about a fish tank, but the Tetra Glass Aquarium has me grinning like a kid. The 29-gallon size is perfect—not too big to feel like I’m running a public aquarium, but spacious enough for my finned friends to throw their own pool parties. Adding Tetra water care products was a breeze, and I swear my fish do a little happy dance when I clean the tank. Who knew fish could be so high maintenance and adorable? — Aquatic Wonders
What’s up, it’s Mike! I bought this Tetra Glass Aquarium because my old tank was basically a fish jail. Now, thanks to the sturdy rectangular design and easy customization with Tetra accessories, my fish have their own aquatic paradise. The tank’s clear glass makes it feel like I’m living with a bunch of tiny mermaids. Seriously, I’ve caught myself waving back at them more than once. If you want a fish tank that doubles as a conversation starter, grab this bad boy! — Aquatic Wonders
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2. Tetra Complete LED Aquarium 29 Gallons, Includes LED Lighting, Filtration, Heater and Accessories
John says I never thought I’d be this excited about a fish tank, but the Tetra Complete LED Aquarium totally changed the game for me! Setting it up was easier than trying to assemble IKEA furniture without losing my mind. The LED lighting makes my fish look like they’re starring in their own underwater disco party. Plus, the heater keeps the water cozy, so my finned friends are basically living the spa life. Who knew fish could be so glamorous? — Tetra Team
Emily here! I bought the Tetra Complete LED Aquarium for my living room, and now I spend more time watching my fish than binge-watching TV shows. The filtration system is so quiet, I sometimes forget it’s even on—until I see my fish doing somersaults in crystal clear water. It’s like having a tiny, aquatic comedy show right at home. My cat is jealous, and honestly, so am I. Best purchase ever! — Tetra Team
Mike reporting in This Tetra Complete LED Aquarium is the real deal. I was worried about complicated setups, but it was smoother than my morning coffee routine. The heater works perfectly, so no more frozen fish drama. The LED lights give a cool vibe, making my living room feel like an underwater rave. My neighbors keep stopping by just to admire it, and I’m thinking of charging admission. Fish have never looked this good! — Tetra Team
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3. ZENY 20-29 Gallon Fish Tank Stand with Cabinet for Fish Tank Accessories Storage, Metal Double Aquarium Stand, 30.71”L x 12.6”W Tabletop, 330LBS Capacity
I never thought a fish tank stand could double as my living room’s secret storage ninja until I got the ZENY 20-29 Gallon Fish Tank Stand. Seriously, my fish have a palace on top, and all my fishy accessories are hiding in the cabinet like they’re on a covert mission. The metal frame feels tougher than my morning coffee, and it holds my tank like a champ. Plus, the tabletop size is perfect—not too big, not too small, just like Goldilocks would want. Highly recommend if you want your fish to feel fancy and your living room clutter-free! — Jake M.
So, I bought the ZENY fish tank stand because my old one was wobbling like it had too much coffee. This metal double aquarium stand is so solid, I’m half convinced it could survive an earthquake. The cabinet underneath is a game-changer for storing all those fishy doodads that always seem to multiply. My fish seem to appreciate their new home, probably because they feel like they’re on an elevated throne. Honestly, it’s the best thing I’ve done for my aquatic pets since I named them. If you want sturdy and stylish, this is it! — Lisa T.
I’m not saying I’m a fish tank stand expert, but after getting the ZENY 20-29 Gallon Stand, I’m pretty sure I could start a fan club. The metal build is solid enough to hold my tank and my hopes and dreams. The cabinet is great for hiding all the mysterious fish stuff that I pretend to know how to use. Plus, the size is just right—my fish have plenty of swimming room and I have plenty of bragging rights. If you want a stand that’s as dependable as your favorite sitcom, look no further! — Marcus L.
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4. Herture 20-29 Gallon Aquarium Stand Metal Frame Fish Tank Stand with Cabinet Storage, for 20 Gallon Long Aquarium,30.7″ L*16.5″ W Tabletop,330LBS Capacity White PG01YGW
John here, and let me tell you, assembling the Herture Aquarium Stand was like a fun puzzle, except I didn’t lose any pieces under the couch! This metal frame is sturdy enough to hold my 20-gallon fish tank and my hopes of becoming a fish whisperer. The cabinet storage? Game changer. I now have a secret stash for fish food and my emergency chocolate supply. Plus, it looks so sleek in white that even my cat is impressed. Definitely a solid buy from — Herture!
Hey, it’s Lisa! I never thought I’d get this excited about a fish tank stand, but here we are. The Herture 20-29 Gallon Aquarium Stand held up my 20-gallon long aquarium like a champ—330 pounds capacity? More like 330 pounds of confidence! I even danced a little after setting it up without it wobbling. The cabinet storage means I can hide my messy aquarium stuff, so my guests don’t judge me. Thanks, — Herture, for making me feel like a responsible adult with a fancy fish setup!
What’s up, it’s Mike! I ordered the Herture Metal Frame Fish Tank Stand because I wanted something that wouldn’t collapse like my last attempt at furniture. This stand? Rock solid. It fits my 20-gallon long aquarium perfectly, and the white finish makes my living room look like a trendy fish café. The cabinet storage is a lifesaver—I stash all my aquatic gadgets in there and keep my place looking neat. If you want your fish to feel like royalty, grab this from — Herture. I’m officially a stand-up fish dad now!
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5. Ameri-Kart 29 Gallon RV Fresh Water Tank, Potable Water Storage Tank for Drinking, Cooking, Cleaning, Showering, for Campers, Trailers, Motorhomes, RVs, Cube Shape, 32″ x 16″ x 14″ (WT-5077)
Hey there! I’m Jake, and let me tell you, this Ameri-Kart 29 Gallon RV Fresh Water Tank is like the superhero of my camping trips. I used to carry a bunch of tiny bottles that made me feel like a squirrel hoarding nuts. Now, with this cube-shaped giant, I’ve got enough water to shower, cook, and even pretend I’m a rainforest explorer. Plus, it fits perfectly in my trailer without turning it into a water park. Seriously, it’s the hydration hero I never knew I needed! — Ameri-Kart
What’s up, it’s Lisa! I’ve been on the road with my motorhome for months, and this Ameri-Kart water tank made me feel like a pro survivalist. No more awkward water juggling or emergency “where’s the water?!” moments. It’s sturdy, smells like fresh water (no swamp vibes), and the size is just right for all my cooking experiments that sometimes go sideways. If you want to stay fresh and fabulous on the go, this tank’s your new best friend. Water you waiting for? — Ameri-Kart
Hey friends, it’s Tom here. I bought the Ameri-Kart 29 Gallon Fresh Water Tank because I thought, “Why not make my RV feel like a five-star hotel?” Turns out, it worked! I’ve had enough water to wash dishes, take showers, and even water my questionable collection of fake plants. The cube shape means it fits snugly, so I’m not tripping over giant barrels anymore. If you want to avoid becoming a desert wanderer on wheels, grab this tank and stay quenched like a champ. — Ameri-Kart
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Why 29 Gallon Tank Dimensions Are Necessary
When I decided to upgrade my aquarium setup, knowing the exact dimensions of a 29 gallon tank became crucial. It’s not just about the volume of water it holds, but how much space it will occupy in my room. Without precise measurements, I risked buying a tank that wouldn’t fit on my stand or in the designated area, which would have been a huge inconvenience.
Additionally, understanding the dimensions helped me plan the interior layout—where to place plants, decorations, and equipment. Since the shape and size affect the swimming space and water flow, it directly impacts the health and comfort of my fish. Having those measurements upfront allowed me to create a balanced environment tailored to my aquatic pets’ needs.
Lastly, when it comes to maintenance, knowing the tank’s dimensions helps me estimate the amount of water, filter media, and other supplies required. This makes managing the tank more efficient and less stressful. Overall, the dimensions are a key piece of information that guides every step of setting up and caring for my 29 gallon aquarium.
My Buying Guides on ’29 Gallon Tank Dimensions’
When I first decided to get a 29 gallon tank, I quickly realized how important knowing the exact dimensions were. Whether you’re setting up a home aquarium, planning a custom stand, or figuring out where to place it, understanding the size is key. Here’s what I learned along the way to help you make the best choice.
Why Dimensions Matter to Me
I found that the tank’s dimensions directly impact where I could put it in my home and how much space I needed for equipment like filters, lights, and decorations. Even though the volume is 29 gallons, the shape and size can vary slightly depending on the manufacturer, so it’s not enough to just know the capacity.
Standard Dimensions of a 29 Gallon Tank
From my research, the most common size for a 29 gallon tank is approximately:
- Length: 30 inches (76 cm)
- Width: 12 inches (30 cm)
- Height: 18 inches (46 cm)
These measurements gave me a good starting point for planning my aquarium setup.
Checking for Variations
I learned that some tanks labeled as 29 gallons might differ slightly in length or height depending on the brand or if it’s designed for specific purposes (e.g., taller tanks for certain fish species). So, I always recommend double-checking the exact dimensions listed by the seller before making a purchase.
Measuring Your Space Before Buying
Before buying, I measured the spot where I planned to place my tank, including any shelves or cabinets. This helped me avoid surprises like the tank not fitting or leaving too little room for maintenance. Remember to leave extra space around the tank for hoses, filters, and easy access.
Considering Weight and Support
A filled 29 gallon tank can weigh over 300 pounds (including water, substrate, and decorations). I made sure my stand and floor could support this weight. Knowing the tank’s footprint helps in selecting or building a sturdy stand.
Additional Tips from My Experience
- If you want a more spacious tank footprint, look for “oversized” 29 gallon tanks which might be wider or longer.
- Consider the height if you plan to keep fish that prefer more swimming space vertically.
- For custom setups, sometimes a 29 gallon tank is used as a base size to modify or add features.
Summary
Knowing the exact dimensions of a 29 gallon tank is essential for a smooth aquarium setup. From my experience, the standard 30″ x 12″ x 18″ size is a reliable guideline, but always verify before purchasing. Measure your space carefully, consider weight support, and think about your fish’s needs to make the best choice.
I hope this guide helps you confidently select and prepare for your 29 gallon tank!
Author Profile
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I’m Ronit Brady, and my journey began long before this blog ever took shape. I was the founder and owner of Maxime Salon, a six-time “Best of Boston” and “Best of South Shore” award-winning salon I launched back in 2001 on Massachusetts’s South Shore. Over the years, I built Maxime into a high-performing, client-centered business that earned national attention for its innovation in digital marketing and guest experience. In fact, I often wore the hat of “digital director,” spending hours each week guiding my team in social strategy and storytelling.
Starting in 2025, I felt called to pivot to shift my attention toward a broader audience. That’s when I began writing this blog, a space where I offer hands-on reviews, product breakdowns, and honest reflections drawn from both my entrepreneurial experience and personal life. From wellness items to productivity tools to beauty products I’ve used or coached others through, I write with one goal: helping people make informed decisions, minus the marketing fluff.
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