Laguna Rectangular Plastic Stock Tubs

Laguna Rectangular Plastic Stock Tubs

A practical basin for a small pond or a carefully managed temporary fish-holding setup

A Laguna rectangular stock tub gives you a separate container when you need to plan a small pond, organise maintenance or temporarily move fish away from work on the main pond. The rectangular footprint makes it straightforward to assess the space available and arrange access around the sides. Choose the size for the job, then plan the water, aeration and filtration around the fish that will actually use it.

These listings are for the plastic tubs themselves. Pumps, filters, air pumps, protective covers and decorative surrounds are separate items. A tub is the starting point for a holding system: filling it with water does not make it ready to support fish without the appropriate equipment and preparation. For a permanent installation, plan the complete layout before positioning or filling the basin.

Choosing between the two sizes

These are the current supplier dimensions for choosing an installation footprint, not a stated working water capacity. Leave fitting clearance around the tub and measure the working volume when filling.

The smaller option is the shallow rectangular tub from the Laguna PT788 range. The larger option is the deeper PT795 model. Check the selected option’s dimensions against the available space, allowing additional room for hoses, equipment and comfortable access. The space required for an installation will be greater than the plastic basin alone, particularly where you intend to add an enclosure or surround.

Depth matters as well as floor area. A shallow container provides easy access for maintenance, but a larger or deeper tub does not automatically become suitable for a particular number of fish. Fish size, water temperature, duration of use and the capacity of the supporting filtration all affect the arrangement. If you are moving established pond fish, prepare the holding system first rather than discovering that the container or equipment is inadequate after draining the pond.

Positioning and support

Choose a level location with a stable supporting surface. A filled tub is heavy, and the supporting structure must be suitable for the whole filled installation, including equipment and any surround. One litre of water weighs approximately one kilogram; this quickly becomes a substantial load even before the basin and accessories are added. Do not place it on a deck, balcony or raised platform without checking that the structure can support that load.

Follow the installation requirements supplied with the exact tub. Avoid leaving the base unevenly supported, and do not assume that a decorative timber surround provides structural support unless it has been designed to do so. Plan a controlled emptying route and access for cleaning. Keep electrical connections and plugs positioned appropriately for pond use and follow the equipment manufacturers’ installation instructions.

Preparing a temporary holding system

Set everything up before fish are moved. Use water suitable for the fish and treat any new tap water appropriately. Check the temperature of the holding water against the main pond rather than assuming that two outdoor containers will be similar. Our floating pond thermometer provides a straightforward way to monitor water temperature as part of those preparations.

Plan continuous aeration and appropriate filtration for the intended use. A familiar pond filter may have considerable biological capacity, whereas a newly assembled filter will not immediately provide the same treatment of fish waste. Moving water from an established pond does not by itself transfer the full biological capacity of its filter. Keep the fish-holding period as short as the planned work allows and monitor the system throughout.

Water quality and daily checks

Water that looks clear can still contain unwanted ammonia. Check water quality during use, especially where fish are held for more than a brief transfer. Our Colombo ammonia test kit is one option for measuring this part of the water conditions. Use the kit’s instructions to interpret the result and take appropriate action if conditions deteriorate.

Keep hoses secure, check that aeration and filtration are operating, and observe the fish regularly. Temperature can change as weather and sunlight change, particularly in a small exposed volume of water. Plan shade where needed without obstructing access or ventilation. If a protective net is used, secure it so that it cannot sag into the water or interfere with the fish and equipment.

Using the tub as a small permanent pond

A rectangular basin can also form the centre of a small pond arrangement. Decide whether you want a planted water garden or a fish pond before selecting equipment, because these uses place different demands on the system. Leave room for maintenance and ensure that any fountain return stays within the basin in normal operating conditions. Splash losses can be significant in a small installation.

Measure the actual working volume when filling rather than calculating treatment quantities from the outside dimensions. Water level, the basin’s shape and anything placed inside it affect the volume available. Record that measured volume for future maintenance. Never lift or reposition a filled tub; remove the water and make the installation safe before moving it. Clean and inspect the basin between uses so that it is ready for the next planned job.