120-125 Gallon Fish Tanks & Aquariums (Glass & Acrylic)

Looking for a 120-125 gallon aquarium? On this page we’ve included a few examples of custom aquariums we’ve built previously at this size, but you should be aware that we can build any tank with any dimensions/extras as required. If you’re interested in a quote for a custom 120-125 gallon fish tank, please use our custom aquarium contact form here.

120 Gallon

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. 

Red Sea Reefer Deluxe XL 525 Aquarium (Black - 139 Gallons)

This tank is slightly over 120 gallons at 139 gallons, but we’ve included this aquariums because it’s great. It is available in black or white. It comes complete with LED light fixtures and looks great.

  • Rimless, ultra-clear, glass aquarium
  • Elegant marine-spec cabinet
  • Professional sump with constant height skimmer chamber and micron filter bags
  • Silent, regulated down-flow system with emergency overflow
  • Integrated automatic top-up system with reservoir
  • Assembly-ready piping – no gluing required

 

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

125 Gallon

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

90 gallon

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.