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Two clear tubular UV bulbs with G23 bases, 7.25 inches long

coospider-repta 13W-UVC 13W G23 UV light fixture 2 pack

SKU CH-NHZE-Y9RNE MPN 13W-UVC

Two-pack of 13 W G23-base UV-C germicidal bulbs rated 8000 hours for pond clarifier use

  • Lighting typeUv
  • Product shapeTubular(T)
  • Casing colorClear
  • Casing materialGlass
  • Color temperatureUltraviolet
  • Beam angleTubular(T)
  • Germicidal UV-C peak at 253.7 nm for chemical-free pond sterilisation
  • High-transmission quartz tube maximises UV output and resists corrosion
  • Universal G23 base fits Jebao, Sunsun, Grech and other clarifiers
  • Rated 8000 hours life with 180-day parts and labour warranty
  • Compact 13 W twin pack installs easily in 7.25 inch fixtures

Pond UV Clarifier Bulb

This two-pack supplies 13-watt UVC lamps with a G23 base for pond clarifiers and sterilizers. Each tubular glass bulb measures 19.812 cm long and operates at a 253.7 nm peak wavelength for germicidal action. The quartz tube construction maximizes UV transmission while resisting corrosion in water treatment environments. Rated life reaches 8000 hours with a recommended replacement interval of 8 to 10 months.

G23 Base Compatibility Limits

The G23 two-pin base fits only fixtures designed for that specific socket; it will not work with four-pin G24 or other bases. Output is fixed at 13 watts, so the bulb cannot be used in housings rated for higher or lower wattage. The 253.7 nm emission is ozone-free but requires a sealed chamber to prevent direct exposure, which can harm eyes and skin. Dimmable function depends on the external ballast or driver supporting dimming.

Replaces Aging Clarifier Lamps

These bulbs replace spent 13-watt UVC lamps in compatible pond clarifiers from brands such as Jebao, Sunsun, Grech, Tetra and others listed. The upgrade is worth it when an existing bulb has passed 8000 hours or shows reduced algae control after 8 to 10 months of continuous use. Buyers needing a different wattage, base type or longer service interval should look for a model matched to their specific clarifier specifications.

How it compares

Measured against everything we stock in Wall Sconces, Ceiling & Desk Lights, at today’s prices. Recalculated every night.

Price $26.99
Cheaper than about 68% of the 424 comparable items (median $38.99).

Specifications

Product
Brand nameCoospider-repta
Model name13 W-UVC
Part number13 W-UVC
Lighting typeUv
Casing colorClear
Power
Power rating13 W
Size & build
Product shapeTubular(T)
Casing materialGlass
Size or dimensions3.9116 cm × 4.9022 cm × 19.812 cm
Compatibility
Fit and compatibilityg23, 13 W-UVC, coospider-repta
Environment & compliance
Temperature rangeUltraviolet
More details
Color temperatureUltraviolet
Beam angleTubular(T)

Questions about this item

Is the 2-pack the only quantity available for this 13-watt UVC bulb?

The supplier lists this item as a 2-pack of 13-watt UVC G23 bulbs. No other pack sizes are mentioned in the product data.

What does the 253.7 nm peak wavelength do inside a pond clarifier?

The 253.7 nm UV-C peak targets microorganisms in the water as it passes the quartz tube, providing chemical-free sterilisation for a healthier pond environment.

Will the G23 base fit my existing pond UV unit?

The G23 base is a standard 2-pin fitting; the bulb is described as a universal replacement compatible with brands such as Jebao, Sunsun, Grech, Tetra, Aquatop, Jebo and ViaAqua clarifiers.

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