T5 bulbs technically will last for about 20 000 hours. That's over 2 years if they were on continuously. However, if you are using them for an aquarium, they should be replaced every 10-12 months.
Fluorescent lights are more expensive to buy, but cheaper to run and they last longer.
The Tungsten T5 can be purchased at most electronics retailers. They are available from Sears, Porter Electronics, Overstock, Amazon, and also can be found on eBay.
Companies who are advertising the Palmone Tungsten T5 for sale online include Pricegrabber and Amazon. They are also available from several sellers on eBay.
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Sympathetic nerves from the cardiopulmonary division T2-T5
Radio fuse
The standard T5 lamp was developed in Europe several years ago, and then introduced to the North American market in 1996. In 1998 t5 HO was introduced in North America. It offers about twice the lumen output in the same length.
Can last anywhere from 1.5 hours to 3.5 hours
You need to mention the location to get the right answer
Good batteries will last 10 hours or more.
About 10 year with lights and plenty of food
Anywhere from a few seconds to hours.
"Mag lights are very strong and can last for months. With regular daily use though because you are draining the batteries, you will probably have to replace the battery."
7000 hours, however the longer the usage, the dimmer it will get.
A Couple Of Years /Months A Couple Of Years /Months
The simple answer is yes, but it really depends. What type of corals do you plan to keep? Will you be only stocking softies, or will it include some LPS and SPS species? The tank dimensions, depth, bulb density, and bulb color also have an effect. I would suggest reviewing some of the numerous reef forums to learn more. Also, make sure that they are HO T5 and not NO T5; only the HO T5 bulbs have the intensity to maintain corals.
I found that my lights were pointed very low on my T5. when i took apart the projector lens i saw there is a piece of metal blocking the beam from pointing higher. I just bent this beam away from the lens a bit to allow light to be projected upward more. they are very bright now. the question is... how legal?