Tag Archives: freshwater

TMC AquaRay NUV 410nm LED

AquaRay Logo
Revised 1/7/16

1380542_595504497173285_1626878484_nTMC AquaRay has finally granted the AquaBeam NUV 410nm LED to be released to the US market. The LED was released to Europe back in 2013 and only to the UK, for quantity control issues. The LED has the same design as the rest of the Solid State AquaRay line, with 5 SemiLED x 410nm near-ultra violet (NUV) didoes, 120 beam angle. It has the waterproof rating of IP67, no fan, shimmer, low carbon output/watts, PWM dimming, and the 5 year full replacement warranty.

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At this point of 2016, American Aquarium Products is the only supplier of these LED to the Western hobbyist. The point of a emitter in this range is to enhance the colors of corals, fish, and plants.

TMC States:

This 410nm wavelength will make corals fluoresce (as well as some other critters and fish) and has been shown to improve the red pigment ratio of certain deep water coral species such as Lobophyllia and Trachyphyllia.

“The addition of this wavelength makes LED lighting look even closer to natural sunlight, truly the true to nature lighting solution you can buy!”

Resource: AAP AquaRay NUV LED

AquaRayNUV

Since this lighting spectrum is in the far side of the lighting spectrum, which also dips into the UVB range, limited quantity/amounts of the light is suggested.

TMC rates on strip of 5 emitters to light up to 170gals/650 litres, and is best seen when the tank is extra dark, say at night, when daytime lighting is off. The LEDs can be used during day lighting hours, just the recommendations of one strip per 170gals has to be considered for true coloration and amounts of UVB provided.

There are other Ultra Violet LEDs out in other commercial fixtures to date, but nothing up to TMC standards of quality of build, and also as a stand alone fixture. Some marine fixtures do have a couple NUV emitters in their fixtures, but separate controllability is not an option, which is why a separate fixture is preferred.

TMC does not give a rating on how long to run the fixture, say all the way threw the night, so caution is advised for health in mind. Start slow and work your way up and also know, limit amounts of this lighting type (more to the UVB range) actually reach the Earth surface.

AquaRayNUV2013

TMC NUV with Reef White Combo

Watch your eyes, as it can be quick to try and blind you. UVB is harmful, so consider safety.

The fixture could be considered for reptile use, but keep in mind, it has a purple/blue look and since this is a new technology, reptiles would really need to be watched as far as health, as no reptile UVB LEDs are on the market as of yet.

repitlesunUVB

Standard UVB Fluorescent

NUVSpectrum

NUV Spectrum

Considering the amount of energy used by both fixtures, the NUV could be used as a supplement UVB light, to be ran all day during normal daylight hours for reptiles. For reef tanks, volume of water needs to be considered. The supplement light can be ran all day on 170 gals of water.

Guest Authored By: Devon Trigg

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IRIDOVIRUS IN GOURAMIS

Iridovirus in Gouramis
From the full article: EDIS; Iridovirus in Gouramis
By RuthEllen Klinger, Ruth Francis-Floyd, John Slaughter and Craig Watson

What Are Iridoviruses?

Iridoviruses are a family of viruses (130–300 nanometers in size) that contain DNA as their genetic material and have an icosahedral (20-sided) capsid. Iridoviruses have been found in a wide variety of fish, including both freshwater and saltwater species. Some iridoviruses have been associated with serious diseases (e.g., viral erythrocytic necrosis of salmonids) while others have only been found in apparently healthy animals (e.g., goldfish iridovirus). One iridovirus causes a disease called lymphocystis which causes unsightly skin lesions on infected fish, but otherwise is of little consequence.

Iridovirus in Gouramis

An iridovirus was found in spleen and intestinal tissue of gouramis from the genus Trichogaster that were dying with signs of systemic disease. Mortality rates of affected fish have varied from low (0.5–10%) to moderate (50%) with death usually occurring 24–48 hours after the onset of signs. Clinical signs associated with the presence of the iridovirus have included darkening of body coloration and lethargy. Sick gouramis often stop eating and the abdomen may be distended. Internally, an enlarged spleen has been the most notable abnormality. The intestine may be reddened, and a clear amber fluid may be present in the body cavity. Laboratory examination for bacterial, fungal, or parasitic agents has frequently been negative. Through electron microscopy (EM), abundant iridoviral particles have been found in the spleens and intestines of dying fish.

An iridovirus has been isolated in cell culture and cytopathic effect (death of infected cells) has been observed. Although the iridovirus has been implicated as a possible cause of disease in gouramis, efforts to reproduce the disease under laboratory conditions have not yet been successful.

Level One UV Sterilization can also help with prevention both by killing any viruses outright that pass through the UV Sterilizer and by improving Redox Balance.
Proper flow rate, installation, even the correct UV (as many now sold are junk), and proper maintenance (which includes changing the UV Bulb) are essential this tool being effective for prevention of Iridovirus in Gouramis.

For the full article (including management & summary) please follow click here:
EDIS; Iridovirus in Gouramis

Further reference:
RuthEllen Klinger, Biological Scientist, Fisheries and Aquatic Sciences; Ruth Francis-Floyd, Associate Professor, Fisheries and Aquatic Sciences; John Slaughter, Veterinarian, Hillsborough County Extension Service; Craig Watson, County Extension Agent, Hillsborough County Extension Service; Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, 32611.

OTHER RELATED/SUGGESTED READING FOR AQUARIUM OR POND KEEPING:

*A Healthy Aquarium, Disease Prevention
An excellent step by step scientifically tested method to keep more disease free fish in an aquarium (or pond)

*How Aquarium or Pond Fish Medications Work
A very in depth article, divided into 4 total web pages

*Aquarium Lighting Facts & Information
In my experience, this is by far the best and most accurate article on the subject. Any obvious biases are well backed up by factual research.
It includes information about the growing in popularity LED Aquarium Lights.

Copyright 2014, By Steve Allen