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Fluorescent Aquarium Lighting: Coralife Actinic Blue Lamps
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Aqueon Actinic Blue Aquarium Lamp Deeper water violet light for fish and corals provides the violet wavelengths of light that are found in deeper water and at dawn and dusk. Stimulates neon glow found in GloFish.
T-5 HO Aquarium Lighting: Actinic TrueLumen 460nm Blue
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Our Hamilton Technology Compact Real Actinic 420nm 03 Blue Square Pin Aquarium Lamp is an excellent choice for saltwater and reef aquariums. This true super actinic blue 03 420nm promotes photosynthesis essential for the health of coral and invertebrates and intensifies the beauty and vibrant color in fish, coral and marine life. Best supplemented with 6700k or 10,000k Super Daylight for dawn to dusk control. This aquarium lamp is specifically engineered to benefit the growth of marine life. Actinic Blue vs White Freshwater Aquarium LED Lighting - YouTube
Photo provided by FlickrAqueon T8 Actinic Blue Light Fluorescent Aquarium Lamp, 17 Watts.
Photo provided by Flickr48
Photo provided by Flickr
The colors we see around us come from the light’s wavelength, measured in Terahertz (THz) or nanometers (nm). Most people can see light ranging from about 700nm (reds) to about 400nm (purples). Blacklights and both produce light from the bottom of the visible light spectrum (the BIV in ROY G BIV). Most actinic lighting for aquariums has a wavelength of about 420-460nm. The higher end of this range (460nm) produces a more blue color light, while the color shifts to purple approaching the lower end (420nm). This type of lighting is still well within what we are capable of seeing. “Blacklights” emit a light below what we as humans are able to see known as ultraviolet or UV light. Yes, this is the same UV light that we wear sunscreen to protect ourselves against! UV lighting is separated into three major ranges. Blacklight bulbs are UV-A bulbs (315-400nm), the spectrum which causes our skin to tan. For comparison, the UV Sterilizers popular in aquariums for eliminating algae, diseases and parasites are UV-C bulbs (200-280 nm), a destructive spectrum that is mostly filtered out by Earth’s atmosphere and the UV-B range in between is the more damaging rays from the sun that causes sunburn and other harmful conditions.Lighting for saltwater aquariums serves a functional purpose and produces a sea-like or natural environment for fish and invertebrates. Actinic Blue tubes that have a high emission peak at 420 nanometers are commonly used. This high-energy blue light penetrates to the bottom of the tank providing light for photosynthesis. Full spectrum or Daylight tubes are mixed with Actinic Blue tubes in an aquarium lighting system to simulate the sun, the natural source of light. The same affect can also be attained in a single lamp by mixing Actinic Blue phosphor with Daylight phosphors. By using the proper lighting, algae, fish, and invertebrates can thrive in a saltwater aquarium.It is noteworthy that whereas higher plants (generally kept in planted freshwater aquariums) require more of the infrared aspect of the PAR Spectrum while the zooxanthellae found inside many sensitive corals require more of the Blue spike (465-485 in particular). For this reason either/both higher Kelvin Daylight and actinic/blue is required for many reef aquariums.Actinic lighting is also used to limit algae growth in the aquarium. Since algae (like many other plants), flourish in shallower warm water, algae cannot effectively photosynthesize from blue and violet light, thus actinic light minimizes its photosynthetic benefit.