Looking for a 120-125 gallon aquarium? On this page we’ve collated a number of aquariums that we recommend at this size. We can also build a custom aquarium at this size if you’re interested. If you’re looking for something a bit bigger, we have a page dedicated to 150 gallon aquariums and 300 gallon aquariums.
If you need a sturdy stand for your aquarium at this size, we recommend this one.
Aqueon® LED Aquarium & Stand Ensemble
Aqueon is a trusted brand in the world of aquariums, and this fish tank and stand ensemble shows just why. It’s excellent quality and also excellent value. It comes complete with 2 LED light strips.
Top Fin® LED Aquarium & Stand Ensemble - 125 Gallon
Like Aqueon, Top Fin is a trusted name in the aquarium space. This 125 gallon aquarium and stand combination is made with clear glass and is double sealed with silicone to ensure safety and security. The glass canopy is fitted with an LED light. It’s priced very well and isn’t expensive considering everything you get.
Clear-For-Life 125 Gallon Rectangle Aquarium
All Clear For Life aquariums are made from the highest quality acrylic, and this 125 gallon aquarium is a great example of what the brand can do. It’s a rectangular aquarium that is made in the USA, and it’s designed to be super durable. You get a limited lifetime warranty and the dimensions are 60″L x 18″W x 24″H
Marineland High-Definition LED Ensemble
This Marineland aquarium is designed for dramatic viewing – with dimensions of 72.5 inches wide by 18.69 inches deep by 22.13 inches high, you get a great viewing area which is perfect for showing off your fish. It comes with a glass canopy and a water-resistant cabinet with storage space. The LED lights are hidden in the canopy.
Clear For Life Pentagon 125 gal aquarium
If you’re looking for the quality of a Clear For Life aquarium but in a more interesting shape than rectangular, then this 125 gallon pentagon fish tank is a great option. Like all Clear For Life aquariums, it’s made from sturdy acrylic and has a limited lifetime warranty. Dimensions are 36″L x 36″W x 30″H
Reefer-S 550 G2+ System (Red Sea)
Another excellent aquarium from Red Sea is this Reefer-S 550 G2+ System – it’s just under 120 gallons in size at 118.4 gallons, but with dimensions of 47.3″L x 26.8″W x 25.6″H, it’s very similarly proportioned to most of the 120 gallon fish tanks that we’ve seen. The glass has a thickness of 3/4″ and we love the advanced technological features such as the digital temperature monitor and the leak detector with audible alarm.
120 Gallon Glass Aquarium (Traditional Frame)
This tank is a 120 gallon glass aquarium built with a reinforced aluminium frame built by our workshop team at our facility. Unlike popular plastic frames which are porous, aluminium frames are designed to withstand moisture. This was a completely custom tank, and we can build custom tanks between the sizes of 120 gallons and 125 gallon. Here are the other details of this tank:
- Dimensions – 25 inches high x 48 inches long x 24 inches deep
- Fully protected during transit with independent crate
- From $900
- Questions? Drop us an email.
120 Gallon Glass Cube Aquarium
This tank is a 120 gallon cube glass aquarium built by our workshop team. Here are the other details of this tank:
- Dimensions – 30 inches long x 30 inches wide x 31 inches high
- Fully protected during transit with independent crate
- From $900
- Questions? Drop us an email.
120 Gallon Acrylic Aquarium (rectangular long)
This tank was made in the USA by our workshop team. This is a 120 gallon aquarium made with Plexiglass acrylic, designed to not yellow or bend. Here are the main features:
- Shipping anywhere in the USA
- Dimensions – 48 inches length x 24 inches high x 24 inches wide
- 1/2″ thick acrylic on side/top/bottom
- Made with Plexiglass acrylic – the hardest acrylic on the market, which means less scratches
- Adhesives used provide the strongest bond possible to ensure longevity
- From $1050
- Questions? Drop us an email.
SC Aquariums Starfire Glass Aquarium 60x24x24 12mm Eurobraced with Built-in Overflow Box
This 125 gallon aquarium is built in the USA and is shipped by Amazon.com, there are 3 holes drilled inside the overflow box all fit 1″ SCH40 bulkhead. Plumbing Kit for the aquarium is included with the order, and this tank has a 5 star rating over on Amazon.com, with the reviewer remarking on how quickly the order arrived at their home. So check it out!
Perfecto Marineland Fish Aquarium with 2 Corner-Flo - 125 gallon
This tank is built in the USA and is shipped by Amazon.com, it’s a 125 gallon aquarium with a 5 star rating on Amazon. Check it out!
All In One 120 Gallon Acrylic Aquarium
This is an all in one tank made with acrylic. Here are the main features:
- Dimensions – 48 inches high x 24 inches long x 24 inches wide
- Includes pump
- Includes filter sock
- Fully protected during transit with independent crate
- 1/2″ thick acrylic on side/top/bottom
- 1/2″ thick acrylic on front/back
- Made with Plexiglass acrylic – the hardest acrylic on the market, which means less scratches
- Adhesives used provide the strongest bond possible to ensure longevity
Perfecto Aquarium
We actually took this image from one of the user reviews we found online, as it’s a much better image than the one that the seller has used. Despite being very understated, this 120 gallon aquarium from Perfecto has been very well reviewed and is clearly a good choice. Here are the main features of this tank:
- Made from glass
- Black silicone lining
- Dimensions – 48 inches x 24 inches x 24 inches
- 4 and a half star rating
Aqueon 120 Gallon Aquarium & Stand
This is a gorgeous looking 120 gallon aquarium from Top Fin, complete with a stand. It’s been well received by buyers (as you’d imagine) and has an average rating of 4 stars. This tank is described as an ensemble, which is a fancy way of saying that it has everything you need to get started. Notable features of this aquarium include:
- Built with glass
- Fluorescent lighting system
- Black stand
- Dual cabinets for additional storage
- Dimensions – 18 inches x 60 inches x 30 inches
FishTankBank 125 Gallon Tall Aquarium (Glass)
This rimless tank was made by our workshop team, and can be shipped to any location in the USA. This is a 125 gallon tall glass aquarium, here are the other details:
- Dimensions – 60 inches x 18 inches x 24 inches (Length x Width x Height)
- Fully protected during transit with independent crate
- From $1100
- Questions? Drop us an email.
Clear-For-Life Rectangular 125 gallon Fish Tank
Clear-For-Life regularly feature on our site, mainly because we think they’re such a great company and create great tanks. This 125 gallon aquarium is no exception – made with the highest quality acrylic, these fish tanks come with a limited lifetime warranty that protects against leakage, so you’ll get years of usage out of this product. The main features of this tank include – made from acrylic, suitable for freshwater and saltwater, available in Sapphire Blue color, rectangular shape, dimensions – 18 inches x 72 inches x 20 inches
Clear-For-Life Pentagon Aquarium
Pentagon fish tanks are regularly featured on FishTankBank (check out the similar tank on our 100 gallon page), and we really love this 125 gallon pentagon aquarium from Clear-For-Life for a few reasons. The shape of the tank provides a unique viewing experience, while also providing your fish with corners for them to hide in if they feel that they need privacy. The main features of this tank include – Made from the highest quality acrylic, limited lifetime warranty, suitable for freshwater and saltwater fish, dimensions – 36 inches x 36 inches x 30 inches
Clear-For-Life Uniquarium Fish Tank
For those of you who haven’t seen these products featured elsewhere on our site, a ‘Uniquarium’ is a fish tank that has built in filtration, making for incredibly easy set up. Clear-For-Life are specialists with Uniquariums, and this 125 gallon fish tank is a perfect example of how awesome these tanks are. Because it’s a Clear-For-Life product, you get limited lifetime warranty against leakage and free shipping. Similar ‘uniquarium’ tanks can be found on our 75 gallon and 90 gallon pages. Notable features of this tank include – made from acrylic, suitable for freshwater and saltwater, rectangular shape, dimensions – 60 inches x 18 inches x 24 inches
Perfecto 125 Gallon Aquarium
We have quite a few Perfecto fish tanks on our site, and this 125 Gallon version of their aquarium is a great example of what the company produces. It’s made from distortion free glass, which provides a clearer viewing experience and ensures that you get a better view of your fish. The main features of this tank include:
- Silicone sealed to ensure no leakage
- Made from glass
- Dimensions – 74 inches x 20 inches x 23 inches
- 5 star rating
CAD Lights 125 Gallon Artisan II Aquarium
This is a fantastic looking 125 gallon aquarium which is designed to be set up immediately, so you can get started on your fish keeping adventure immediately. You won’t just get a beautifully stylish tank with your purchase, you’ll also get a great looking stand to display your tank on. The main features of this tank include:
- 1/2 inch thick ultra clear glass
- 100% Maple Plywood aquarium stand
- Silent pump
- LED lighting
120 – 125 gallons is the perfect size for most fish keepers (and for most fish too). It provides your fishy friend with enough room to stay happy and healthy, and it doesn’t take up too much room in your home (which is always a good thing). We compiled the following list of 120 – 125 gallon fish tanks and aquariums by including a selection of tanks that we sell, and a selection of tanks available to buy elsewhere online. We compiled this list by reading reviews, comparing prices and even giving them a test for ourselves in a few cases. The list might be pretty short (120 – 125 gallons is quite a specific size for a tank after all), but hopefully you find our list useful.