ZooMed Coral Sun Actinic 22″ T5 24W Lamp
The Coral Sun is a high-intensity actinic lamp with strong emissions in the short wavelength region of the spectrum, peaking at 420nm. It promotes the growth of zooxanthellae algae, which are essential for the health and well-being of photosynthetic corals and invertebrates.
This bulb simulates the natural short-wavelength blue light that penetrates to reef depths in marine environments. The light output closely matches the absorption peak of chlorophyll, supporting efficient photosynthesis in reef organisms.
Designed for use in all marine aquariums and reef tanks, this T5 fluorescent lamp provides reliable, long-lasting illumination. Made in Europe, Zoo Med’s aquarium lighting is known for superior color accuracy and extended burn life.
Energy-efficient T5 design saves up to $30.00 per year in electricity compared to older T12 bulbs. Rated for up to 10,000 hours of continuous use.
| Specification | Value |
|---|---|
| Wattage | 24W |
| Lamp Type | T5 |
| Length | 22 inches |
| Spectrum Peak | 420nm |
| Life Span | Up to 10,000 hours |
| Application | Marine aquariums, reef tanks |
FAQ
What is the peak wavelength of the Coral Sun Actinic lamp?
The peak wavelength of the Coral Sun Actinic 22″ T5 24W lamp is 420nm, which falls in the blue light spectrum and closely matches chlorophyll absorption.
How long does the lamp last?
This lamp is rated for up to 10,000 hours of continuous use.
Is this lamp suitable for all types of marine aquariums?
Yes, the Coral Sun Actinic lamp is ideal for all marine aquariums and reef tanks due to its strong blue light output that supports photosynthetic organisms.

William Mills –
This lamp has significantly improved the color and growth of my corals. The blue light is strong and consistent, and my anemones have shown better coloration and activity. It’s been running for over 6 months and still performs well.
Jonathan May –
I switched from a T12 to this T5 lamp and noticed a noticeable difference in coral health. The light is brighter and more focused, and the algae growth has increased. Energy savings are also evident on my monthly bills.
Wendy Peake –
The lamp works well in my 55-gallon reef tank. It provides the right blue spectrum for photosynthesis. A bit dimmer than expected at the back of the tank, but overall it’s reliable and long-lasting.
Jan Powell –
Great value for the performance. The 420nm peak is exactly what my corals need. I’ve used it for over a year and it hasn’t flickered or dimmed. The color rendering is accurate and the coral growth has been steady.