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Aen · 08-08-2007, 02:31 AM

Seems like Takashi Amano reccomends green light over blue and red.

Quoted from Aqua Journal:
In the tropical streams where aquatic plants grow, sunlight are filtered through many vertical layers of tree canopy. The upper layer receives as much as 25% to 100% direct exposure to sunlight. This is scientifically known as the euphotic layer. In the lower parts of the forest and streams below, where low light conditions occurs, this si known as the oligophotic layer where a mere 1-3 percent of light is made available to plants. This small percentage of light are filtered through the forest green canopy and reflected as incidental light, thus the natural wavelengths are dramatically altered. Aquatic plants have evolved millions of years to adapt to greenish light available to them. The NA-Lamp adopts a fresh green ulothrix fluorescent to reproduce nature's green irradiance wavelength in your aquarium.

Here's the spectral distribution of NA-Lamps.

So I guess land plants or those that get sunlight all teh time like red and blue, while those at the bottom and in water have evolved to make use of green better.

08-08-2007, 02:31 AM	#23 (permalink)
Aen Member Join Date: Jul 2007 Posts: 59 iTrader Ratings: 0 Plant Points: 3600	Re: Lighting for the Planted Aquarium Seems like Takashi Amano reccomends green light over blue and red. Quoted from Aqua Journal: In the tropical streams where aquatic plants grow, sunlight are filtered through many vertical layers of tree canopy. The upper layer receives as much as 25% to 100% direct exposure to sunlight. This is scientifically known as the euphotic layer. In the lower parts of the forest and streams below, where low light conditions occurs, this si known as the oligophotic layer where a mere 1-3 percent of light is made available to plants. This small percentage of light are filtered through the forest green canopy and reflected as incidental light, thus the natural wavelengths are dramatically altered. Aquatic plants have evolved millions of years to adapt to greenish light available to them. The NA-Lamp adopts a fresh green ulothrix fluorescent to reproduce nature's green irradiance wavelength in your aquarium. Here's the spectral distribution of NA-Lamps. So I guess land plants or those that get sunlight all teh time like red and blue, while those at the bottom and in water have evolved to make use of green better.