6ft / 180cm Aquariums & Fish Tanks

Shop 6ft and 180cm aquariums for large freshwater fish, planted tanks, aquascaping and impressive feature displays at Aquaholics. A 6ft aquarium provides extensive swimming room and the space to create substantial freshwater environments, making it a striking centrepiece for a home, office or dedicated fish room.

Our range includes premium low-iron glass aquariums and complete aquarium and cabinet systems. Sunshine Coast customers can also visit Aquaholics in Baringa for help choosing a large aquarium and the filtration, lighting, heating and other equipment needed to complete their setup.

Why Choose a 6ft Aquarium?

A 6ft aquarium generally refers to a fish tank around 180cm long. The exact width, height and water capacity vary between models, and these dimensions can significantly affect total volume, swimming space and equipment requirements.

The additional length makes a 180cm aquarium ideal for larger freshwater displays, active fish, substantial community setups and large planted aquariums. It also gives you much more freedom when creating open swimming areas, defined territories and large-scale aquascapes.

Always choose livestock according to adult size, activity level, social behaviour, territorial requirements and the actual dimensions and capacity of the aquarium.

Premium Low-Iron Glass 180cm Aquariums

Our 6ft aquarium range includes premium low-iron glass systems designed to provide excellent viewing clarity across a large display.

Low-iron glass contains less iron than conventional aquarium glass, reducing the green tint that can be noticeable through thicker glass panels. This improved clarity can make fish colours, aquatic plants and aquascaping details appear more natural and is particularly valuable in a large feature aquarium.

Complete 6ft Aquarium Setups

A complete 6ft aquarium system can simplify the planning of a large freshwater setup. Depending on the model, complete systems may include the aquarium, matching cabinet, LED lighting, filtration or sump components and other equipment.

Always check the individual product description to confirm exactly what is included, as specifications and supplied equipment vary between aquarium systems.

If you're looking for a particular 6ft or similarly sized aquarium and cabinet combination that isn't currently displayed online, Aquaholics can also check ordering options from leading aquarium brands including Aquael, OASE and Bioscape, subject to current model availability.

Sumped 6ft Aquarium Systems

Some larger aquarium systems use a sump positioned inside the cabinet beneath the main display tank. A sump can provide substantial filtration capacity while allowing filter media, heaters and other equipment to be housed away from the main display.

This can be particularly useful on a large 180cm aquarium where biological filtration capacity, equipment access and maintaining a clean display are important.

Sump layouts and supplied equipment vary between systems, so always check the individual product specifications to understand what is included and what additional equipment may be required.

6ft Aquariums for Planted Tanks & Aquascaping

A 180cm aquarium provides outstanding proportions for creating a large freshwater aquascape. The extra horizontal space gives you room to build more complex layouts using aquarium rock, wood and live plants while still maintaining generous open swimming areas.

Large planted aquariums can range from natural low-maintenance displays through to advanced aquascapes. Lighting, substrate, fertilisation and CO2 requirements should be selected according to the plants you intend to grow and the style of aquarium you want to create.

Explore our aquascaping supplies for aquarium rock, wood, planted substrates, tools and other products for creating your 180cm aquascape.

Choosing Equipment for a 6ft Aquarium

A large aquarium requires equipment that is correctly matched to its actual water volume, livestock and intended setup. Two aquariums that are both approximately 180cm long can have very different capacities depending on their width and height.

• Aquarium filtration – choose filtration with sufficient biological capacity and flow for a large aquarium and its livestock.
• Aquarium LED lighting – browse lighting options for large freshwater displays and planted aquariums.
• Aquarium heaters – select heating according to the actual water volume and temperature requirements of the aquarium.
• Aquarium substrate, gravel and sand – choose decorative or planted substrates for large freshwater aquariums.
• Live aquarium plants – create natural planted displays and large-scale aquascapes.

What Fish Can Live in a 6ft Aquarium?

A 6ft aquarium can provide suitable space for a broad range of freshwater fish when stocked appropriately. The additional swimming length makes this size useful for larger community setups and selected larger or more active freshwater species.

However, even a 180cm aquarium is not suitable for every species. Adult size, swimming behaviour, group requirements, territorial behaviour, filtration capacity and the aquarium's actual dimensions must all be considered when planning livestock.

Once your aquarium is fully established and cycled, explore our range of live aquarium fish for your freshwater setup.

Setting Up a 180cm Aquarium

A 6ft aquarium becomes extremely heavy once filled with water, substrate, rock, wood and equipment. It must be positioned on a strong, stable and level cabinet or stand designed to safely support its complete filled weight.

Plan the aquarium's final location carefully before setup, as moving a large aquarium after installation can be difficult. Install the required filtration, heating and lighting, add substrate and hardscape, then fill the aquarium using appropriately conditioned water.

The aquarium should be fully cycled and biological filtration established before fish or other livestock are introduced.

6ft Aquariums on the Sunshine Coast

Looking for a 6ft aquarium or 180cm fish tank on the Sunshine Coast? Aquaholics Aquarium Supplies is located in Baringa, where local customers can get help choosing a large aquarium, cabinet, filtration, lighting and other equipment for a complete freshwater setup.

We can also check availability for selected aquarium and cabinet systems from brands including Aquael, OASE and Bioscape if you're looking for a particular model or configuration that isn't currently displayed online.

Looking for another aquarium size? Browse our full range of aquarium fish tanks and complete aquarium kits, or explore our 2ft aquariums, 3ft aquariums, 4ft aquariums and 5ft aquariums.

Frequently Asked Questions

How big is a 6ft aquarium?

A 6ft aquarium is generally around 180cm long. Width, height and total capacity vary between models, so always check the individual specifications before selecting equipment or livestock.

How many litres is a 6ft fish tank?

There is no single capacity for a 6ft aquarium because tanks around 180cm long can have very different widths and heights. Use the manufacturer's stated dimensions and capacity when selecting filtration, heating and livestock.

Is a 6ft aquarium good for larger fish?

A 6ft aquarium provides substantially more swimming room than smaller tanks and may suit selected larger or more active freshwater species. Suitability still depends on the adult size, behaviour and space requirements of the individual species.

Is a 6ft aquarium suitable for aquascaping?

Yes. A 180cm aquarium provides excellent horizontal space for large-scale planted aquascapes using live plants, aquarium rock, wood and substrate.

Do I need a specialised cabinet for a 6ft aquarium?

Yes. A 6ft aquarium must sit on a strong, stable and level surface capable of safely supporting its complete filled weight. A purpose-built aquarium cabinet or appropriately engineered stand is strongly recommended.

What is a sumped aquarium?

A sumped aquarium uses a separate filtration chamber or tank, usually positioned beneath the main display aquarium. It provides additional space for filtration media and other aquarium equipment.

Can Aquaholics order a complete 6ft aquarium setup?

Yes. Aquaholics can check ordering options for selected complete aquarium and cabinet combinations from brands including Aquael, OASE and Bioscape, subject to current availability.

Can I buy a 6ft aquarium on the Sunshine Coast?

Yes. Aquaholics Aquarium Supplies is located in Baringa on the Sunshine Coast and stocks large aquariums, complete systems and equipment for freshwater, planted and aquascaped setups.