ATI® Actinic T5 HO Bulb | 421nm Violet-Blue Fluorescence Reef Lighting
24 Watt True Actinic (23.11")
$24.95
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ATI® Actinic T5 HO Bulb | 421nm Violet-Blue Fluorescence Reef Lighting
$24.95
What is the Actinic Bulb?
The ATI Actinic is a specialized T5 HO bulb designed to maximize the visual beauty of a marine aquarium. It produces a targeted violet-blue light with a specific color spectrum peak at 421nm. This wavelength is precision-engineered to trigger the intense fluorescence that makes coral colors "pop" with vivid detail.
The Science of Fluorescence
Unlike standard blue bulbs, the Actinic focuses on the near-UV range to stimulate the fluorescent proteins within coral tissues. This makes it an essential tool for:
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Color Enhancement: Brings out and emphasizes fluorescent pigments more than standard full-spectrum lighting.
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Sunrise & Sunset Simulation: Providing a soft, natural transition that mimics the low-light hours on a natural reef.
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Versatile Supplementation: Acting as the perfect spectral addition to existing LED, T5, or Metal Halide systems.
Why Choose ATI T5 Bulbs?
For over 25 years, ATI T5 bulbs have been the industry leader in supporting thriving reef tanks. Our advanced manufacturing techniques ensure:
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Higher Output: Superior performance compared to standard actinic tubes.
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Better Coloration: A refined 421nm peak for maximum visual impact.
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Proven Stability: Trusted by everyone from coral farmers to home hobbyists for consistent results.
Customizing Your Reef’s Look
ATI’s unique assortment of bulb options helps bring out a wide range of colors in corals and make fluorescence really pop. For a customized look, the Actinic can be paired with other bulbs in your T5 fixture or added along side your LED or Metal Halide systems.
Recommended Application
Because the Actinic is a specialized spectrum bulb, it is most commonly used as a supplemental tube to add depth and glow to a primary lighting schedule or run alone as an option for dawn/dusk viewing.
Specifications
| SKU | Item | Wattage | Length |
| 1500000 | Aquablue Special (T5) | 24 watt | 22.2 in (56.3 cm) |
| 1500001 | Aquablue Special (T5) | 39 watt | 34 in (86.36 cm) |
| 1500002 | Aquablue Special (T5) | 54 watt | 45.8 in (116.33 cm) |
| 1500003 | Aquablue Special (T5) | 80 watt | 57.5 in (146.30 cm) |
| 1500004 | Blue Plus (T5) | 24 watt | 22.2 in (56.3 cm |
| 1500005 | Blue Plus (T5) | 39 watt | 34 in (86.36 cm) |
| 1500006 | Blue Plus (T5) | 54 watt | 45.8 in (116.33 cm) |
| 1500007 | Blue Plus (T5) | 80 watt | 57.5 in (146.30 cm) |
| 1500008 | Actinic (T5) | 24 watt | 22.2 in (56.3 cm |
| 1500009 | Actinic (T5) | 39 watt | 34 in (86.36 cm) |
| 1500010 | Actinic (T5) | 54 watt | 45.8 in (116.33 cm) |
| 1500011 | Actinic (T5) | 80 watt | 57.5 in (146.30 cm) |
| 1500012 | Purple Plus (T5) | 24 watt | 22.2 in (56.3 cm |
| 1500013 | Purple Plus (T5) | 39 watt | 34 in (86.36 cm) |
| 1500014 | Purple Plus (T5) | 54 watt | 45.8 in (116.33 cm) |
| 1500015 | Purple Plus (T5) | 80 watt | 57.5 in (146.30 cm) |
| 1500016 | Coral Plus (T5) | 24 watt | 22.2 in (56.3 cm |
| 1500017 | Coral Plus (T5) | 39 watt | 34 in (86.36 cm) |
| 1500018 | Coral Plus (T5) | 54 watt | 45.8 in (116.33 cm) |
| 1500019 | Coral Plus (T5) | 80 watt | 57.5 in (146.30 cm) |
