FX UVC In-Line Clarifier

The FX UVC quickly and easily connects to all canister filters to eliminate suspended algae for a clean and clear aquarium.


Compatible with most competitive canisters via two 1″ to 5/8″ (25 to 16 mm) hose adapters

CCFL bulb runs cool for longer life and lasts 2x longer than traditional fluorescent bulbs

Energy-efficient 6W bulb eradicates cloudy and green water

Helps to rapidly treat and prevent cloudy or green water issues

A safe, chemical-free and maintenance-free way to clarify water

Compact design avoids cluttering existing filter setups

Available Models

FX UVC In-Line Clarifier

400 US Gal / 1000 L

Discover the Benefits of UVC Light

Helps Maintain a Clean and Clear Aquarium

A chemical-free way to clarify water. Does not harm existing surface-dwelling beneficial bacteria.

Prevents Cloudy and Green Water

Eliminates suspended algae in the water column that contribute to cloudy and green water.

Ideal for
Live Plants

Helps prevent algae growth, which often smothers and destroys aquatic plants.


Limits chance of cloudy or green water outbreaks that can lead to other issues.
Requires minimal upkeep once installed.

For Use in All

Can be used in freshwater, saltwater and turtle
aquariums where algae is often present.

See Your Aquarium In High Definition

Innovative design redirects water flow up, down and around the UVC bulb to maximize contact time for effective clarification.

CCFL Bulb Technology

UVC wavelengths are proven to be the best solution to clear cloudy or green water versus traditional chemical treatments. Its peak effectiveness occurs at 253 nm.

Runs Cold for Long Life

Cold Cathode Fluorescent Lamp (CCFL)
runs cooler than traditional UVC bulbs
to last up to 2X longer.

20 000 HR Bulb

Lasts over 20,000 hours – more than 2
years of continuous use.

Energy Efficient

6W bulb eradicates cloudy and green water with lower energy costs – a better choice for the environment.

For Use With All External Filters

While the FX UVC In-Line Clarifier is designed for use with FX2/4/6 filters, it is also compatible with most competitive canisters via two 1″ to 5/8″ (25 to 16 mm) hose adapters, which are included for fast and easy setup.

Mounting Options

The FX UVC in-line clarifier can be mounted directly to the FX filter lid, or cabinet interior walls with the universal mounting bracket (included)

Affixed to FX Filter Lid

For use with FX filters

Affixed to Cabinet Wall*

For use with FX and competitive filters

*FX filters: 1 x 1″ (25 mm) FX filter ribbed hosing required (sold separately – A20233)

*Competitive filters: 5/8″ (16 mm) vinyl hose required (sold separately)

Replaceable Bulb

The FX UVC In-Line Clarifier is powered by a 6W CCFL bulb that can be quickly and easily replaced by removing 2 screws.
(Sold separately – A19990)


Capable of working in either direction, so there is no need to adjust your existing filtration setup.

Compact Design

Fits easily within aquarium cabinetry with minimal disturbance to existing filtration setup.

Indicator Light

Provides visual confirmation when unit is operational.

What’s in the Box


100-240V/24V power supply

90° rubber elbow adapter

2 x 1″ to 5/8″ (25 to 16 mm) hose adapters

Universal cabinet wall mount bracket and screws

4 x 14-27mm diameter hose clamps

Compare Models & Specs

FX UVC In-Line Clarifier

400 US Gal / 1000 L

  • Item #


  • UPC


  • Aquarium Capacity

    400 US Gal / 1000 L

  • Max. Flow Rate

    563 US GPH / 2130 LPH

  • Wattage (120 V / 60 Hz)


  • Wattage (230-240 V / 50 Hz)


  • Hose Diameter

    1″ / 25 mm > 5/8″ 16 mm

  • Max. Operating Pressure

    0.4 bar

  • Size Range

    8.25″ L x 4.25″ W x 4″ H / 21 x 11 x 10 cm

  • Power Consumption

    100-240 V / 50-60 Hz

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