Fluval 10943 Hang-On Breeding Box, 1.9 L

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Product guide

Fluval 10943 Hang-On Breeding Box, 1.9 L

The Fluval 10943 hang-on breeding box is a plastic aquarium accessory listed for fish breeding and quarantine. Its 1.9-litre capacity and up to three partitioned compartments suit separating fish or fry, while its stated frameless-tank fit has a minimum glass thickness requirement.

At a glance

Designed to hang on the exterior of an aquarium, with a space-saving format.
Partition plates are listed for creating up to three separate compartments.
The listing names breeding, isolation and acclimatisation as uses.

Price

£11.69Save 37%

Reference price: ~~£18.52~~

Price checked: 13 Nov 2026

View offer

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Pros and cons

Pros

A single box can be divided into as many as three compartments for separating fish.
The external hang-on design leaves the aquarium interior less occupied than an internal box.

Technical specifications

10 specifications

Identity and capacity
Brand	Fluval
Model	10943
Tank volume	1.9 Litres
Shape	Rectangular

Dimensions and installation
Dimensions listed	27.2L x 14.5W x 14.7H centimetres
Weight listed	1.2 Pounds

Materials and features
Material	Plastic
Special features	Easy to Clean, Easy to Use
Maximum compartments	Up to 3 separate compartments for breeding, isolating or acclimatizing fish, using partition plates (included)
Frameless aquarium fit	For frameless aquariums use with min. 5 mm glass thickness

What to know before buying

Customer feedback is mixed about the box's size and durability, including reports of cracked units. The listing gives a 1.9-litre capacity. One customer-feedback summary notes that an air pump may be needed for circulation, so buyers should account for suitable aeration and verify their setup.

What’s in the box

Breeding boxIncluded
Air diffuserIncluded
Air tubeIncluded
Partition platesCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Fish keepers seeking a small external box for breeding, isolating or acclimatising fish.
Aquarium owners who want to divide a box into multiple compartments.

Less suited to

Buyers needing a large nursery or a standalone tank rather than a 1.9-litre hang-on box.
Owners of frameless aquariums with glass thinner than the stated 5 mm minimum.

Fluval 10943 Hang-On Breeding Box, 1.9 L · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 6,200 ratings

5 stars70%70%
4 stars12%12%
3 stars9%9%
2 stars4%4%
1 star5%5%

Customer feedback highlights useful functionality and fry-raising suitability, alongside positive comments about the design. Experiences are mixed on size, durability, value and air circulation, and noise is criticised. The 1.9-litre capacity and up-to-three-compartment layout give some context for the reported size concerns, while the air diffuser and tube listed in the kit do not establish that an air pump is included.

Positive themes

Customers report that the box works well for raising fry and like its design and functionality.

Negative themes

Noise level is criticised in customer feedback.

Mixed feedback

Feedback differs on size, durability, value for money and air circulation. Some describe it as sturdy while others report cracks, and one account says a separate air pump is needed.

Frequently asked questions

How many compartments can the box have?

The listing says it can be divided into up to three separate compartments using included partition plates.

What aquarium fit requirement is stated?

For frameless aquariums, the listing specifies a minimum glass thickness of 5 mm.

Is an air pump included?

The listed contents are the breeding box, an air diffuser and an air tube. A pump is not named in that contents list, and customer feedback notes that a separate air pump may be needed.