300 Gallon Fish Tanks & Aquariums (Glass & Acrylic)

This tank was made by us at our facility. This is a standard tank made with acrylic. If you’d like a customized version of this aquarium, contact us and let us know what you’re looking for. Here are the main features:

• Dimensions – 24 inches high x 60 inches long x 48 inches wide
• Fully protected during transit with independent crate
• 3/4″ thick acrylic on top, side, front and 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

This tank was made in the USA, and comes with shipping to any location within the USA. This is a standard tank made with acrylic, slightly larger than 300 gallons. Here are the main features:

• Dimensions – 24 inches high x 96 inches long x 36 inches wide
• 3/4″ thickness on front/back
• 1/2″ on side/top/bottom
• Fully protected during transit with independent crate

This is what we would describe as a classic, ‘no frills’ 300 gallon fish tank. It’s clear, which means you’ll be able to see every inch of the tank once it’s full. Here is a quick rundown of the main features of this awesome aquarium:

• Acrylic – much safer, stronger and lighter than glass – you’ll be grateful for this once you have to carry your new 300 gallon tank up the stairs (although there is still a bit of weight to it)!
• Rectangular shape – it might not look the fanciest, but it does exactly what you need it to – keeps your fish happy!
• Dimensions – 24 inches x 96 inches x 30 inches
• Suitable for saltwater and freshwater
• To see prices and more, click the button below.

This is the 300 gallon Clear For Life fish tank, which is essentially the same as the first tank that we included in the list, except it’s black. Many fish keepers would prefer to have the black background as it allows any of the decorations they’ve included in the tank to stand out better, but it really comes down to personal preference (also what your fish likes!). Here is why we love this monster sized aquarium (if you want a slightly smaller tank the check out our 100 gallon tank page or our 150 gallon fish tank page):

• Made from acrylic – if you haven’t realized it already, acrylic is a much safer, lighter and stronger material than glass, so if your 300 gallon tank happens to fall over, it’s less likely to break
• Suitable for saltwater and freshwater fish – perfect if you have a species of fish that requires either type of water
• Lengthy – this fish tank has dimensions of 24 inches x 96 inches x 30 inches

You might have realized by now that there isn’t a huge amount of choice when it comes to 300 gallon fish tanks….luckily these aquariums from Clear For Life are available in a range of different colors, for example this dark blue type. You’ll find exactly the same color of tank over on our 20 gallon page. More about this fish tank:

• Made from acrylic
• Lightweight
• 24 inches x 96 inches x 30 inches in size

This is the same Clear For Life fish tank as previously included, except this is my favorite color – Blue! If you haven’t guessed it already, we’re big fans of these 300 gallon fish tanks from Clear For Life, so check them out!
So there is our list of 300 gallon aquariums and fish tanks, hopefully you’ve found something here that will suit your needs. If you’re not yet in the market for such a big fish tank, we’ve also got pages for 55 gallon tanks.