Joined: Dec 19, 2005 Posts: 2753 Location: Surat, Gujarat
Posted: Fri Jan 20, 2006 5:58 pm Post subject:
I'm not an expert at this but since you asked - I have never tried my hand at the PL lamps for my planted tanks - all I use is a couple of tubelights
1) 40w Philips Trulite (red)
2) 36w Osram Lumilux plus
Never needed to replace them!
Chlorophyll does not absorb all the wavelengths of visible light equally. Chlorophyll a, the most important light-absorbing pigment in plants, does not absorb light in the green part of the spectrum. Light in this range of wavelengths is reflected. This is the reason why chlorophyll is green and also why plants (which contain a lot of chlorophyll) are also green.The absorption of light by chlorophyll a is at a maximum at two points @ 430 and 662 nm. The rate of photosynthesis at the different wavelengths of visible light has two peaks which roughly correspond to the absorption peaks of chlorophyll a at 430nm & 662nm.
Now let us look at a product from Philips Aquarelle /89 :-
Light output closely matches the natural light wavelength which is required for successful photosynthesis and chlorophyll synthesis Particularly high energy in the blue region, providing a well balanced spectrum which stimulates oxygen production, promotes thriving aquarium plant and fish life and gives good colour rendering
Can be combined with Philips TL-D/80 New Generation or TL-D/90 de Luxe colours to create different visual impressions without impairing the biological qualities of the Aquarelle light output
Optimally tuned to reveal the true beauty of fish and plant life in fresh water aquaria
- Intensifies fish colours
- Promotes plant growth
- Photosynthetic growing lamp
- Stimulates plants
- Promotes colour highlights in fish
AZOO SUPER LIGHTâ€™s spectral output simulates the light spectrum as it occurs in nature when transmitted below the water surface. Suitable for the growth of water plants.
Specrtum Image Azoo Super Light:-
AZOO TRI-POWER LIGHT Imitate the solar spectrums, and is
designed on three levels timeters. It provides red, green,and blue light for
photosynthesis need. It's the best illumination for water plants, algae and invertebrate. It presents the the most prolific photosynthesis.
Spectrum Image Azoo Tri- Power Light:-
So from this one can see which is the best suited light for Aquarium Plants in the TLD 90 DeluX Series.
Last edited by joyban on Sat Jan 21, 2006 1:16 pm; edited 2 times in total
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