Bow Front Fish Tank: Advantages, Limitations and Rectangular Alternatives

A bow front aquarium differs from a standard tank in a single panel, yet that curved front affects the view of the fish, the choice of lid and the furniture beneath it. Before buying one, it is worth knowing where the shape helps and where a rectangular tank offers a simpler solution.

What you'll learn from this article

• How is a bow front fish tank built?
• How does curved glass change the view into the aquarium?
• Why are lids and stands for bow front tanks harder to replace?
• When does a rectangular aquarium suit a room better?
• Which rectangular DIVERSA tanks and sets can replace a bow front?

A bow front fish tank has a front panel that curves outwards, while the back and sides usually remain flat. The curve gives a wider, more panoramic view and extra depth in the middle of the tank, although it can also distort the image of fish near the edges. Lids, lights and stands must follow the same curve, so accessories are typically specific to one model.

How a bow front aquarium is built

In a glass bow front tank, the front pane is shaped by bending sheet glass into an arc. The rear and side panels are cut from flat glass and joined to the curved front with silicone. Acrylic versions follow the same layout, although acrylic is easier to form into curves.

The curve means the tank is deeper at its centre than at the ends. Its footprint therefore resembles a shallow half-moon attached to a rectangle. This shape also affects the base, which needs support along the curved edge as well as the straight back.

Bending glass adds a production step that flat panels do not require. For that reason, bow front tanks are generally more expensive than rectangular tanks of a similar volume.

Curved glass and the view into the tank

The main appeal of a bow front is the view. A curved panel lets the viewer see more of the interior from the sides of the room, and the aquarium appears deeper than its floor space suggests. In a lounge where people sit at different angles, this panoramic effect can be striking.

Curved glass, however, bends light unevenly. Fish passing near the ends of the curve may look stretched or slightly displaced. Photographs taken through a bow front often show this distortion, which matters to aquarists who like to photograph their fish.

A flat front panel, by comparison, shows the interior without optical changes from any angle. The view is less dramatic, yet it stays accurate for observation and photography.

Lids, lighting and stands made for one shape

A bow front tank needs a lid that follows its curve exactly. Such lids are usually made for one model and one manufacturer. If the original cover cracks or warps years later, finding a matching replacement can prove difficult.

The same applies to stands and cabinets. Furniture for a bow front tank must support the curved front edge, so a standard rectangular stand rarely fits. Replacing either part may therefore mean replacing the whole set.

Rectangular tanks avoid this problem. Lids, stands and protection mats follow standard footprints, so a single damaged part can be replaced on its own. For example, our lids with LED lights are sold separately in seven rectangular sizes.

Floor space and water depth in the middle of the tank

Bow front tanks are often promoted as space savers. The curve adds depth at the centre without extending the full length of the tank. In practice, this gives a little more swimming room in the middle while the ends stay shallower.

That uneven depth affects aquascaping. Rocks and plants placed at the shallow ends have less room, while the centre can hold larger features. Some aquarists enjoy designing around this shape, whereas others find a uniform depth easier to plan.

Cleaning the inside of curved glass also takes some care. Straight scraper blades do not follow the arc closely, so a magnetic cleaner suited to curved panes is usually the better choice.

When a rectangular aquarium is the better choice

A rectangular tank suits most first aquariums, because its lid, stand and equipment are easy to source and replace. It also gives an undistorted view, which helps when observing fish behaviour or checking their health. Moreover, flat glass panels keep the price lower for the same volume.

Rooms with limited space can benefit too. A rectangular tank fits neatly against a wall or into a corner, with no curved edge projecting into a walkway. Its uniform depth also makes it simpler to plan the layout of plants and decor.

A bow front remains a reasonable choice when the panoramic view is the main priority and the owner accepts that accessories come from one manufacturer.

Rectangular DIVERSA aquariums and matching sets

Our DIVERSA glass aquariums range in capacity between 12 and 300 litres. All are made from Guardian float glass, with thickness increasing from 3 mm in the smallest tanks to 8 mm in the 200 to 300-litre models. Most tanks also arrive with a free protection mat.

For a complete setup, the Comfort Sets with Lids include the aquarium, an LED lid, a cabinet and a protection mat, all sized to each other. Alternatively, the sets with Lid & Stand use an open stand in black or white.

Under our delivery terms, all deliveries are free. Tanks up to 54 litres travel on a next-day service, while larger aquariums go out with our own drivers within 14 days, mostly at weekends.

Frequently asked questions

What is a bow front fish tank?

It is an aquarium with an outward-curving front panel and, usually, flat back and side panels. The curve creates a panoramic view and extra depth at the centre of the tank.

Do bow front aquariums distort the view of fish?

Curved glass can make fish near the ends of the arc look stretched or displaced. Flat front panels, by contrast, show the interior without this effect.

Are bow front tanks more expensive than rectangular ones?

They generally cost more for a similar volume, because the front pane must be bent into shape. Matching lids and stands can also be pricier, since they are made for one specific model.

Can I use a standard lid on a bow front aquarium?

A standard rectangular lid will not cover the curved front properly. Bow front tanks need a lid made for the same model, which can be harder to replace later.

Does MB Store sell bow front fish tanks?

No, our DIVERSA range consists of rectangular glass aquariums between 12 and 300 litres. They work with standard lids, stands and cabinets that can each be replaced separately.