UV Clarifiers

Green, pea-soup water is caused by tiny free-floating algae that a normal filter can't catch. A UV clarifier fixes it. As water passes the ultraviolet lamp, the algae clump together so your filter can remove them, and the water usually starts to clear within a week or two.

Our UV clarifiers

Choose a stand-alone Pond One Cleartec UV clarifier, from 5W for small ponds and water features up to 36W for larger ponds, and plumb it in between your pump and filter. Or choose a pond filter with UV built in, such as the Pond One Claritec, Laguna PressureFlo, Oase Filtoclear, Oase Filtral or Oase BioPress sets.

Choosing the right wattage

The bigger the pond, the more UV wattage you need. Size up for ponds in full sun or with lots of fish, and make sure your pump flow suits the clarifier. Water that passes too quickly won't get enough UV exposure.

Keep it working

UV lamps lose strength over time even while they still glow, so replace the bulb every 12 months, ideally in spring. Clean the quartz sleeve at the same time. You'll find replacement UV bulbs and quartz sleeves for Pond One, Blagdon, Laguna and Philips units.

A UV clarifier treats green water but not string algae. For that, see our algae control treatments. Read more in why your pond water is green and how UV clarifiers fix it.

Ready for clearer water?

Try a UV Clarifier

Save 33%

Pond One Cleartec Ultra Violet Clarifier 18W

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~~$270.00~~ $169.95

Pond One Claritec 3000 Pressure Filter with 9W UV Clarifier

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$295.00

Pond One Claritec 10000 Pressure Filter with 13W UV Clarifier

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$389.95

Pond One Claritec 5000 Pressure Filter with 9W UV Clarifier

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$350.00

Pond One Cleartec Ultra Violet Clarifier 36W

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~~$329.00~~ $215.00

Pond One Cleartec Ultra Violet Clarifier 11Watt

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~~$225.00~~ $150.00

Pond One Claritec 15000 Pressure Filter with 13W UV Clarifier

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$405.00

Oase BioPress 4000 Set – Pump, Filter & UVC

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$495.00

Pond One Cleartec Ultra Violet Clarifier 5W

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~~$199.00~~ $125.00

Pond One Cleartec Ultra Violet Clarifier 9W

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~~$225.00~~ $135.00

Bioscape - All in One Submersible Pond Filter with UV 2000lph

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$255.00

Make sure you feed your pond plants monthly between September & March.

Don't Forget to Feed!

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Oase Filtral UVC 3000

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$515.00

Oase Filtral UVC 6000

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$760.08

Blagdon Inpond 5 in 1 Pond Multi Filter 6000

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$420.00

Oase Biopress 10000 Set - ( Includes pump UVC and filter)

Oase BioPress 10000 Set – Pump, Filter & UVC

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$899.00

Laguna PressureFlo UVC Pond Filter 17000 24w

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$1,095.00

Laguna PressureFlo UVC Pond Filter 13500 24w

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$895.00

Laguna PressureFlo UVC Pond Filter 7500 13w

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$695.00

River buttercup flowering at the edge of a garden pond in spring

The Best Pond Plants to Plant in Spring (Australian Guide)

on Oct 16 2026

Spring is the best time of year to plant up your pond. Here are our favourite oxygenators, marginals, water lilies and edibles to plant now, plus simple tips to get them off to a flying start.

Brown tree frog sitting beside a garden pond

How to Start a Frog Pond: A Step-by-Step Guide for Australian Gardens

on Oct 16 2026

Want frogs in your garden? Here's how to build a frog pond step by step, from choosing the spot and digging shallow edges to planting it up and keeping the water safe for tadpoles.

How to Fertilise Pond Plants: A Simple Guide to Healthy Growth

on Oct 12 2026

Want to know the easiest way to keep your pond plants healthy? Read on and learn about our simple 5 step feeding process!

How Do Pond Plants Get Sent?

Shipping

Yes, our pond plants are shippable! We ship every week day. Due to quarantine, we can't ship to WA or TAS.

Packed to Travel the Distance

Our plants are packed to stay in transit for weeks! Alternatively, you can click & collect from our retail outlet.

On Arrival

On arrival, your plants will be thirsty. Pop them into your pond as soon as possible..

Plant Guarantee

Shop with confidence — backed by our 14-Day Thriving Guarantee

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