

The T5 Giesemann Powerchrome Actinic Blue 39W (850 mm) tube reproduces the natural light conditions of deep reef areas. With its concentrated spectrum between 400 and 510 nm and a peak at 420 nm, it intensifies the fluorescence of corals and enhances your marine aquarium , especially during the twilight phase.
The Powerchrome Actinic Blue 39W – 850 mmGiesemann is a high-end T5 tube specially designed for reef aquarium lighting. Its intense blue light faithfully reproduces the light spectrum present at depths of several meters, stimulating the growth of corals and revealing their natural fluorescent colors.
The majority of coral species live in areas where blue wavelengths dominate. The Powerchrome Actinic Blue tube has been developed to mimic these conditions, with concentrated spectral emission between 400 and 510 nm and peak intensity at 420 nm. This spectrum promotes the photosynthesis of zooxanthellae and stimulates the growth and coloration of many hard and soft corals.
Thanks to high-quality fluorescent phosphors, Giesemann guarantees exceptional colour stability and a long service life of the tube. Its light rendering remains constant over time, ensuring a stable environment for your marine animals.
The Powerchrome Actinic Blue enhances the fluorescence of corals under blue light, particularly visible during the night or twilight phase. Combined with theGiesemann Aquablue Azur or Aquablue Coral tubes, it creates a spectacular lighting atmosphere worthy of a natural reef.
| Feature | Detail |
|---|---|
| Mark | Giesemann |
| Model | Powerchrome Actinic Blue 39W |
| Reference | 100.562 |
| Length | 850 mm |
| Light spectrum | 400 – 510 nm (peak at 420 nm) |
| Tube Type | Size 5 – 16 mm diameter |
| Usage | Marine Aquarium / Reef |
| Visual Effect | Accentuates coral fluorescence |
| Average Lifespan | Approx. 8,000 hours |
Récif'Art Advice: For an optimal look, combine this Actinic Blue tube with an Aquablue Coral or Aquablue Azur from the same brand Giesemann, to obtain a full spectrum that promotes coral growth and coloration.
⚠️ Replace your T5 fluorescent tubes every 9 to 12 months to ensure a stable spectrum and avoid loss of light intensity.
The Powerchrome Actinic Blue Giesemann tube increases the amount of blue light in the marine aquarium. It promotes the photosynthesis of zooxanthellae and stimulates the growth and natural coloration of corals, while improving their fluorescence.
This tube emits mainly in the range of 400 to 510 nm, with a peak intensity at 420 nm. This spectrum corresponds to the light perceived in the deep areas of coral reefs and faithfully reproduces the natural conditions of the sea.
The Powerchrome Actinic Blue can be used on its own for specific visual effects, but it reveals its full potential when combined with other Giesemann tubes such as the Aquablue Coral or Aquablue Azure. Together, they offer a full spectrum balanced between blue and white light.
The blue light emitted promotes the natural fluorescence of corals and improves the growth of coral tissue. It highlights the fluorescent pigments and offers a spectacular visual rendering, especially at dusk.
Thanks to the use of high-quality phosphors, the colour stability remains excellent over time. It is recommended that T5 tubes be replaced every 10 to 12 months to maintain optimal intensity and spectrum.
Yes, the Powerchrome Actinic Blue 39W (850 mm) Giesemann tube is compatible with all standard T5 ballasts of the same power. It can be used in the majority of T5 light bars on the market.
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The T5 Giesemann Powerchrome Actinic Blue 39W (850 mm) tube reproduces the natural light conditions of deep reef areas. With its concentrated spectrum between 400 and 510 nm and a peak at 420 nm, it intensifies the fluorescence of corals and enhances your marine aquarium , especially during the twilight phase.














