Genuine AQUATOP quartz sleeve cover designed to protect the UV bulb in CF‑400UV and CF‑400UVMKII canister filters. Ensures optimal UV sterilization and long‑term filtration performance.

The AQUATOP Quartz Sleeve Cover (SKU: CF400‑RQS) is an essential OEM replacement part engineered to protect the UV bulb inside your AQUATOP CF‑400UV or CF‑400UVMKII canister filter. Made from high‑clarity quartz glass, this sleeve allows maximum UV penetration while shielding the bulb from water exposure, debris, and mineral buildup.

If your UV sterilizer is underperforming or the original sleeve is cracked, stained, or damaged, replacing it restores full UV efficiency — helping maintain crystal‑clear water and a healthier aquarium environment.

Compatible AQUATOP Models

• CF‑400UV – Canister Filter with 9W UV Sterilizer (370 GPH)

• CF‑400UVMKII – Updated Canister Filter with 9W UV Sterilizer (370 GPH)

What This Quartz Sleeve Does

• Protects the UV bulb from water contact

• Ensures proper UV output for sterilization

• Maintains peak filtration and water‑clarity performance

• Prevents premature bulb failure

• ⭐ Key Benefits 

  • OEM replacement part designed specifically for AQUATOP canister filters

  • High‑clarity quartz glass for maximum UV transmission

  • Restores full UV sterilization efficiency

  • Protects UV bulb from moisture, debris, and mineral buildup

  • Easy installation for quick maintenance

  • Compatible with CF‑400UV & CF‑400UVMKII systems