Zoo Med 6,500K Ultra Sun T8 Fluorescent Aquarium Bulb, 24-in, 18-watt

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About This Item

Details

  • 6,500-kilowatt trichromatic light brings out the vibrant colors of your carefully curated tank.
  • Great for use in aquariums that require maximum daylight simulation.
  • Ideal for all marine aquariums, reef aquariums and freshwater aquariums.
  • Offers even light distribution while generating less heat than metal halide lamps.
  • Each bulb offers up to 10,000 hours of effective illumination.
  • 6,500-kilowatt trichromatic light brings out the vibrant colors of your carefully curated tank.
  • Great for use in aquariums that require maximum daylight simulation.
  • Ideal for all marine aquariums, reef aquariums and freshwater aquariums.
  • Offers even light distribution while generating less heat than metal halide lamps.
  • Each bulb offers up to 10,000 hours of effective illumination.

Maximize your tank’s daylight exposure with the Zoo Med 6,500K Ultra Sun T8 Fluorescent Aquarium Bulb. This trichromatic light brings out the vibrant colors of your carefully curated tank. It also provides balanced coverage of the full spectrum of visible light and promotes photosynthetic processes in plants and marine algae. Each bulb offers up to 10,000 hours of stunning illumination and is great for use in marine aquariums, reef aquariums and freshwater aquariums where maximum daylight simulation is required.

Specifications
Item Number318684
Weight4.56 ounces
Dimensions24 x 1 x 1 inches
Aquarium TypeFreshwater, Saltwater
Made InChina
Sourced FromUnited States
UV Light TypeUVA Light
Lighting ColorWhite
Bulb TypeNight Lamp, Ultraviolet
Fish TypeTropical Freshwater
MaterialGlass
Reptile TypeLizard

Instructions

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HID/Wavelength    
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—

—

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280nm - 700nm

280nm - 700nm

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Bulb Type    
Night Lamp, Ultraviolet

Night Lamp, Ultraviolet

Ultraviolet

Ultraviolet

Ultraviolet

Ultraviolet

Ultraviolet

Ultraviolet

Ultraviolet

Ultraviolet

Sourced From    
United States

United States

—

—

Germany

Germany

China

China

United States

United States

Made In    
China

China

—

—

Germany

Germany

Germany

Germany

Germany

Germany

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Reviews
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3.4
Rated 3.4 out of 5 stars
21 Ratings
Terms & Conditions

11 Customer Reviews

Rated 1 out of 5 stars
By Kate on Dec 10, 2025

Have for 2 days and light is out

After having it for 2 days the light doesn’t work. I’ve checked the plugs, outlets, everything and it’s not working.

Rated 1 out of 5 stars
By Kiela on Nov 28, 2025

Fish Tank

For some reason they didn't last long

Rated 1 out of 5 stars
By david on Oct 6, 2025

None

doesnot work l8ike i expected

Rated 5 out of 5 stars
By dennis on Apr 25, 2025

Brightness

Light bulb is bright and lights entire 55 gallon tank.I think will be fine.

Rated 5 out of 5 stars
By Dale on Mar 13, 2025

Product availability

Couldn’t find the aquarium light anywhere Chewy came through!! I don’t have a dog anymore.

Rated 1 out of 5 stars
By Cher on Nov 26, 2024

Extremely poor quality

This aquarium light bulb was delivered to us on November 21st and we installed it on our tank on Saturday the 23rd and it didn't come on Tuesday the 26th, we checked the light and the bulb was already blown!! The bulb should get more than 12 hours of usage time!! Very disappointed in this product!!

Rated 1 out of 5 stars
By Steve on Nov 27, 2024

Who packaged this for shipment?

Shipment was packaged so poorly that the tube was loose in the box and certainly was bounced around. It worked but I wonder what the long term effect will be?

Rated 1 out of 5 stars
By James on Nov 12, 2024

Great product. But Chewy.com are SPAMMERS!

Requests to unsubscribe simply IGNORED! If you hate SPAM, show elsewhere.

Rated 5 out of 5 stars
By David Michael on Sep 27, 2024

I was able to find this highly recommended light tube!

I like this light tube so much that I am going to order more tubes.

Rated 2 out of 5 stars
By Martha on Sep 15, 2022

POORLY MADE!

Unfortunately, though I was originally happy with my purchase, as the light was nice and bright. It didn’t last long. My Previus light lasted over 5 yrs. This one only lasted 6 Months to be exact. I am surprised to see something made in Germany and with such poor quality. :(