• Five functions in one housing — pumping, mechanical filtration, biological filtration, UV-C clarification and a fountain, with one lead to run and one unit to service.
• 8 W UV-C clarifier built in — targets the free-floating algae that turns pond water pea-green. This is the only difference between this model (BIS671) and the cheaper BIS670.
• Two-stage sponge filtration — a coarse sponge takes leaf litter and larger debris, a fine sponge takes the fine suspended solids that keep water hazy.
• Ceramic biological media — three ceramic rings give nitrifying bacteria a surface to colonise, so the unit processes ammonia rather than just straining water.
• Three interchangeable fountain nozzles — different spray patterns from the one riser, to a maximum fountain height of 1.3 m.
• Automatic LED fountain light — a 1 W LED ring with a photosensor that switches itself on at dusk and off at dawn. No timer to set.
• 24 V low-voltage operation — the pump, lamp and light all run at 24 V DC from the supplied transformer, which keeps mains voltage away from the water.
• 6 m of lead — measured from the unit to the transformer plug, which sets how far the pond can sit from your outlet.

• All in One submersible unit with 2,000 L/h pump and filter housing
• 8 W UV-C lamp, fitted
• 1 x coarse filter sponge
• 1 x fine filter sponge
• 3 x ceramic biological media rings
• Fountain riser stem
• 3 x interchangeable fountain nozzles
• 1 W LED fountain light with photosensor
• 24 V transformer with 6 m lead
• Fountain fittings and connectors

This unit is sold as an all-in-one, so it is worth being clear about where that stops.

• Pond liner, pond shell or any pond structure
• Hose or pipework beyond the fountain fittings supplied — this unit fountains, it does not plumb to a waterfall
• A weatherproof outdoor power outlet and RCD, which you will need for the transformer
• A protected, dry housing for the transformer itself
• Pond water treatments, dechlorinator or starter bacteria
• Spare UV-C lamp — the fitted lamp is a 12-month consumable. See Bioscape All in One Pond Filter 8 W UV-C globe.

Bioscape does not publish a flow-against-head curve or a flow-with-media-loaded figure for this unit, and does not publish a UV-C dose in microwatt-seconds per square centimetre. The 2,000 L/h figure is a zero-head rating with clean sponges. Expect real delivery to fall as the sponges load, which is normal and is what the cleaning interval below is for.

Pond filtration is judged on turnover — how many times an hour the whole pond passes through the filter. Ornamental ponds are generally kept at one to two turnovers per hour, and goldfish or koi ponds want more. The figures below are the rated 2,000 L/h divided by pond volume.

The unit needs enough water depth to sit fully submerged, and needs to be reachable — you will be lifting it out to clean the sponges. If your pond is over 2,000 L or holds koi, the Bioscape Pressurised Pond Filter Unit with UV 8000 is the next step up.

Bioscape sells this housing in two versions. They are mechanically identical. The only difference is the UV-C lamp.

Choose this model if your pond gets direct sun and goes green. Choose the Bioscape All in One Submersible Pond Filter 2000lph without UV if your pond is shaded, heavily planted, or you simply do not want an annual lamp to replace.

The 8 W UV-C lamp is a clarifier. Water passing the lamp has its free-floating single-celled algae clumped together so the sponges can trap them, which is what clears green water. It generally takes a few days to a fortnight of continuous running to see the change.

It is not a steriliser. Bioscape does not publish a UV dose figure for this unit, and clarifier-grade doses are well below what is needed to control fish parasites such as whitespot. Do not buy this unit as a disease control measure. It also does nothing for string algae or blanketweed clinging to rocks and liner, because that algae never passes the lamp.

The lamp keeps glowing well past the point it stops working. UV-C output falls away over roughly a year of continuous use, which is why the replacement interval is 12 months rather than "when it fails".

• Sponges — rinse in a bucket of pond water, never under the tap. Chlorinated tap water kills the biological colony you have spent weeks building. Rinse when flow visibly drops, typically every two to four weeks in a stocked pond. Replacements: All in One Pond Filter Foam Media Set 2 Pack.
• UV-C lamp — replace every 12 months. Mark the date on the transformer with a marker when you fit it.
• Quartz sleeve — wipe the sleeve around the lamp whenever you change it. A film of scale or algae on the sleeve blocks the UV before it reaches the water.
• Impeller — the most common cause of a unit that hums but does not pump is a jammed or worn impeller. See All in One Pond Filter Impeller with Shaft.
• Fountain nozzles — a spitting or lopsided fountain is almost always a partly blocked nozzle, not a failing pump. Spares: All in One Pond Filter Riser Stem and Fountain Heads.
• Transformer — keep it dry and off the ground. Replacement: All in One Pond Filter Transformer.
• Winter — if you shut the pond down, remove the unit, clean it, and store it dry. Never leave it where it can freeze with water inside.

Suitable for

• Freshwater ornamental ponds and water features up to 2,000 L
• Ponds that go green in summer sun
• Lightly to moderately stocked goldfish ponds
• Anyone who wants a fountain, a light and filtration from one lead

Not suitable for

• Ponds over 2,000 L, or any koi pond with real stocking
• Saltwater or brackish systems
• Running a waterfall or plumbed pipework — the 1.3 m figure is fountain height, not usable pumping head
• Controlling fish disease or parasites
• Clearing string algae or blanketweed on surfaces
• Aquarium use — the unit is designed to lie submerged on a pond floor and needs more depth and footprint than a small tank offers
• Running dry, even briefly. The pump must stay submerged.

• Supplied for 220-240 V, 50 Hz Australian mains with an AU plug on the transformer.
• The submerged unit runs at 24 V DC. Only the transformer sees mains voltage.
• Run the transformer from a weatherproof outdoor outlet protected by a residual current device (RCD). This is standard practice for any pond equipment and is worth confirming with an electrician if your outdoor outlet is old.
• Keep the transformer dry, above ground level, and out of the splash zone of the fountain.
• Switch the unit off at the outlet before putting your hands in the pond.
• Never look directly at a lit UV-C lamp out of its housing. UV-C damages eyes and skin. Only ever run the lamp assembled inside the unit.
• Do not lift or carry the unit by its cable.

• Bioscape All in One Pond Filter UV-C Globe 8 W — the annual replacement lamp. Worth having on the shelf before the water goes green.
• Bioscape All in One Pond Filter Foam Media Set 2 Pack — sponges wear out and tear. A spare set means you never have to run the unit unfiltered.
• Bioscape Heavy Duty Pond Air Pump 4200lph — added aeration for hot Queensland afternoons, when warm pond water holds the least oxygen and fish gasp at the surface.
• Bioscape All in One Pond Filter Transformer — the part most exposed to weather, and the one most likely to need replacing before the pump does.

Your rights under the Australian Consumer Law apply to this product and are not limited by any manufacturer's warranty. Where goods are not of acceptable quality you are entitled to a repair, replacement or refund. Any manufacturer's warranty Bioscape offers applies in addition to those consumer guarantees, not instead of them.

The unit ships as a standard parcel. There are no dangerous goods, cold chain or oversize restrictions. Keep the transformer and packaging if you need to make a warranty claim, as the transformer is usually needed for assessment.

Will the Bioscape All in One with UV clear green pond water?

Yes, that is what the 8 W UV-C lamp is for. It clumps free-floating algae so the sponges can trap it, and green water typically clears within a few days to two weeks of continuous running. It will not clear string algae or blanketweed growing on rocks and liner, because that algae never passes the lamp.

What size pond does this unit suit?

Bioscape rates it for freshwater ponds up to 2,000 litres. At that size the 2,000 L/h flow gives one full turnover per hour, which suits an ornamental or lightly stocked pond. For a stocked goldfish pond, sizing it to a 500 to 1,000 litre pond gives a more comfortable two to four turnovers per hour.

How often does the 8 W UV-C lamp need replacing?

Every 12 months. UV-C output falls away over about a year of continuous running long before the lamp stops glowing, so replace it on the calendar rather than waiting for it to fail. A visibly lit lamp is not evidence that it is still clarifying.

Does the unit have to be fully submerged?

Yes. It is a submersible unit designed to sit on the pond floor with water above it. Running the pump dry, even briefly, will damage it. Your pond needs enough depth to cover the 15 cm height of the housing with water to spare.

What is the difference between BIS670 and BIS671?

Only the UV-C clarifier. BIS671 has an 8 W UV-C lamp fitted and draws 35 W; BIS670 has no lamp and draws 32 W. Flow rate, filtration, fountain patterns, fountain height and pond size rating are identical between the two.

Can I run a waterfall from it?

No. This unit is built to fountain, not to pump through hose to a raised outlet. The 1.3 m figure is maximum fountain spray height at the nozzle, not usable pumping head against pipework. A waterfall needs a dedicated hi-lift pond pump and a separate filter.