

The JBL T5 Marin Blue Ultra 45W (895mm) tube is an essential lighting solution for marine aquariums. It delivers a deep blue 25,000°K spectrum, stimulating coral and zooxanthellae growth with targeted actinic radiation. Its versatile design also extends to nocturnal lighting for other ecosystems.
The JBL T5 Marin Blue Ultra 45W (895mm) Tube is an essential component for any saltwater aquarium concerned with the health and beauty of its corals. Designed to provide specific lighting, it plays a crucial role in the development of marine organisms.
This tube emits an intense blue light, characterized by a color temperature of 25,000°K. This specificity is not accidental: it faithfully reproduces the light present in the oceanic depths, known as actinic radiation. This spectrum is particularly appreciated by zooxanthellae, the symbiotic algae that live in coral tissues and are responsible for their growth and coloration. By strengthening this blue zone, the JBL Marin Blue Ultra actively stimulates photosynthesis, thereby promoting healthy and vigorous coral growth in your reef.
For optimal daytime lighting in saltwater aquariums, it is highly recommended to combine the T5 Marin Blue Ultra Tube with the JBL SOLAR MARIN DAY. This combination ensures a perfect balance between essential light input and a natural visual aesthetic for your marine ecosystem.
Beyond its main application in marine aquaristics, this tube offers remarkable versatility. It is also an ideal solution for night lighting in freshwater aquariums and terrariums. It allows for fascinating observation of nocturnal animal behaviors, creating a subtle ambiance without disturbing their biological cycle.
| Feature | Detail |
|---|---|
| Model | T5 Marin Blue Ultra Tube |
| Brand | JBL |
| Power | 45W |
| Length | 895mm |
| Color temperature | 25,000°K |
| Manufacturer Reference | 00261784 |
| Lighting type | Actinic blue |
| Main application | Marine aquariums (coral growth) |
| Secondary application | Night lighting for freshwater aquariums and terrariums |
The main role of this tube is to stimulate coral growth by reinforcing the blue zone of the light spectrum. Its 25,000°K color provides the actinic radiation essential for the photosynthesis of zooxanthellae, symbiotic algae vital for coral health and development.
No, for optimal and complete daytime lighting in a saltwater aquarium, it is highly recommended to combine the T5 Marin Blue Ultra Tube with a whiter spectrum tube such as the JBL SOLAR MARIN DAY. This combination ensures an ideal light balance for corals and fish.
Yes, "25,000°K" (Kelvin) represents the color temperature of the tube. In this case, it indicates a very blue light spectrum, close to what is found in deep water. It is this specific spectrum, or actinic radiation, that is crucial for stimulating the growth of corals and zooxanthellae.
Yes, in addition to its primary use in marine aquaristics, the T5 Marin Blue Ultra Tube is also perfectly suited for night lighting in freshwater aquariums as well as terrariums. It allows for observation of nocturnal animals without stressing them, offering a subdued and adapted light.
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The JBL T5 Marin Blue Ultra 45W (895mm) tube is an essential lighting solution for marine aquariums. It delivers a deep blue 25,000°K spectrum, stimulating coral and zooxanthellae growth with targeted actinic radiation. Its versatile design also extends to nocturnal lighting for other ecosystems.

