The Connector Tube for FX UVC In‑Line Clarifier is an essential accessory for anyone using a Fluval FX Series canister filter with the Fluval FX UVC In‑Line Clarifier. This tube serves as the hydraulic link that guides filtered water from the canister into the UV chamber, where harmful free‑floating algae and micro‑organisms are neutralized, leaving your aquarium water visibly clearer and healthier.

Design and Compatibility

The connector tube is manufactured from a high‑quality, durable polymer that resists aging, pressure, and the effects of continuous UV exposure. Its dimensions are matched exactly to the FX UVC In‑Line Clarifier inlet and outlet ports, ensuring a snug, secure fit that prevents leaks and bypasses. The tube is compatible with all Fluval FX canister filters and integrates seamlessly with the FX UVC system, including the included hose adapters and rubber elbow pieces.

For the Beginner Aquarist

If you are new to UV clarifiers, this connector tube greatly simplifies setup. Without it, the FX UVC cannot be installed inline with your filter, which means you lose the benefit of continuous algae control and pathogen reduction. Installation is straightforward:

1. Disconnect the return hose from your FX canister output.

2. Attach the connector tube to the filter outlet or Aquastop valve.

3. Connect the other end of the tube to the FX UVC clarifier.

4. Route the remaining hose from the clarifier back into the aquarium.
   No glues, clamps, or special tools are required, making it ideal for beginners who want clean‑water benefits without complex plumbing.

Benefits for Aquarium Health

By using this connector tube, you maintain a continuous flow of water through the UV chamber, increasing contact time with the energy‑efficient CCFL UV bulb inside the FX UVC. This helps reduce:

• Free‑floating green algae (green‑water outbreaks)

• Suspended micro‑organisms and some pathogens

• Overall cloudiness in both freshwater and marine tanks

As a result, your aquarium stays visually clear and more stable, which is especially helpful for planted tanks and reef setups where clarity and biosecurity matter.

Practical Features and Long‑Term Use

• UV‑resistant polymer ensures the tube does not degrade when exposed to incidental UV or warm water.

• Smooth inner surface minimizes flow resistance and reduces the risk of clogging or biofilm buildup.

• Compact length and diameter (approximately 48 cm long, 3 cm wide) fit neatly inside or under most aquarium cabinets without creating kinks.

Because the FX UVC In‑Line Clarifier is designed to work “in‑line” with your filter, the connector tube is a mission‑critical part of the system. Many return‑flow setups or cabinet‑mounted installations will not function correctly without this dedicated tube, so it is recommended to keep at least one as a spare in case of damage or future re‑plumbing.