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Re: [APD] re light fixture
I just purchased two 9W screw-in LED lamps that are used for terrarium and vivarium. They are amazingly bright. I believe that their color temp is 6500K.
I am in the process of building a vivarium (out of a 20 gallon high) using some emersed grown aquatic plants and some terrarium friendly plants and I cannot really tell you how effective they are for growing aquatic plants in an aquarium. However, judging from the fact that many dart frog and tree frog hobbyists are growing gorgeous Bromeliads and other plants in their vivarium, I suspect that these lamps should do just fine for small planted aquariums. I have to ask my friend to let me borrow his PAR meter to tell what the PPFD values are, but I got the feeling that they are much brighter than the majority of the common CF's. They are somewhat pricey, but it's not bad at all if you take its 40,000 hour life into consideration.
I got my light at this site: http://www.lightyourreptiles.com/
The screw-in LED's are listed toward the bottom of the page.
On Wed 25/01/12 12:47 PM , Jerry Baker jbaker6953 at gmail_com sent:
> On 1/25/2012 9:25 AM, RMGTBTS at aol_c
> om wrote:> but I cant wait to hear about the LED's and their
> ratings as to life of> unit and plant growth.
> Some of Cree's new LED emitters have efficiencies over 100 lumens per
> watt and emit fairly strongly in the blue portion of the spectrum, which
> is good for plants. They even come in high-CRI color bins which means
> the fish and plants will show off their true colors. The expense isn't
> too bad when you consider that these LEDs should have a useful life of
> over 10 years on a 12-hour cycle. You could achieve the same lighting
> levels as an AH Supply 55W kit using only 45 watts or so. The issue
> seems to be that nobody is really manufacturing aquarium lights using
> these emitters yet.
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