Norfine Japanese Style Containment Zip Cage – 3ft Cube

Norfine Japanese Style Containment Zip Cage – 3ft Cube

A deeper floating enclosure with a zipped lid and weighted mesh base

The Norfine Japanese Style Containment Zip Cage is a suspended net enclosure for temporary fish containment within an existing pond. This listing is the BT201 3ft x 3ft x 3ft cube, the larger of the two zipped cube sizes in the SKS range. Its floating top frame holds the opening at the surface, while small weights in the bottom corners help the soft net extend down into the water.

The cage provides a separate space in which to observe a suitably sized fish while retaining contact with the surrounding pond water. Smooth black 3mm mesh forms the enclosure, and the lid closes using four zips. The combination gives you access from above and physical separation from fish outside, without introducing a rigid tank into the pond.

BT201 dimensions and specification

SKS lists this cube as approximately 92cm in each direction. Converting three feet mathematically gives 91.44cm, which explains the rounded 91cm figure sometimes used in product details. These are nominal measurements, not a guaranteed installation tolerance. Measure your chosen pond position with clearance around the frame and beneath the hanging net; avoid planning an exact fit between shelves or fittings.

Choosing between the two cube sizes

The 3ft cage has a larger surface footprint and a deeper net than the Norfine 2ft containment cage. That extra space may be useful, but it also needs a deeper, unobstructed position. A shelf suitable for the smaller enclosure may prevent this version from opening fully. Check both the depth and your ability to reach the lid from the pond edge.

Select the enclosure around the fish rather than the advertised cube size alone. Consider body length, turning room, fin clearance and how calmly the fish settles inside. There is no published fish-number or maximum-koi-size rating for this listing. Nor should a calculated cube volume be used as a stocking allowance: water exchange, oxygen, fish size and the purpose of containment all matter.

Positioning the frame and hanging net

Before introducing a fish, inspect the mesh, corner weights, seams and all four zips. Deploy the empty cage first and check that the lower net extends freely. Keep it away from pump intakes, forceful returns, rough masonry and equipment that could snag the mesh. The weighted corners help pull the base down, but they cannot correct an unsuitable position where the net rests on a ledge or folds against an obstruction.

Choose an accessible location with suitable water movement through the enclosure. Watch for leaves or blanket weed collecting on the mesh during use, as these can restrict exchange with the surrounding water. Keep the pond’s filtration and oxygenation operating appropriately. Floating at the surface is not, by itself, evidence that conditions inside the net are suitable.

Observation, shared water and treatment

A floating net divides space, not water. Fish inside remain exposed to the same waterborne conditions as the rest of the pond. This makes the cage unsuitable as independent quarantine for new arrivals, and it cannot contain a separate medication dose. A purpose-built, separately managed system is needed when fish or treatment water must be isolated from the main pond.

During observation, look for changes in breathing, swimming, fin position and feeding interest. If behaviour causes concern, check the water rather than assuming the problem is confined to the enclosed fish. Our Colombo Pond Test Lab is one option for routine parameter checks. Seek appropriate advice when a fish shows persistent distress; the cage supports observation but does not diagnose or treat illness.

Using the lid and looking after the cage

Arrange suitable transfer equipment before opening the lid. Keep fins and loose mesh away from the zip tracks and check that the top closes properly afterwards. The floating frame is not a handle for lifting a fish-filled enclosure out of the pond. Remove the fish using suitable handling equipment before taking the empty net out for maintenance.

Clear accumulated debris, rinse the net and inspect the seams, frame and fastenings after use. Let it dry before storing it away from sharp tools or heavy objects. Equipment that has contacted a fish with a suspected infectious problem needs an appropriate disinfection procedure before reuse elsewhere. Clean storage and regular inspection help you identify damage before the next occasion when temporary containment is needed.