Penn-Plax Tri-Lux

• To: Aquatic-Plants at actwin_com, "Clayton L. Workman" <cworkman at quapaw_astate.edu>
• Subject: Penn-Plax Tri-Lux
• From: George Booth <booth at hpmtlgb1_lvld.hp.com>
• Date: Tue, 14 May 1996 09:07:43 -0600
• In-Reply-To: Your message of "Mon, 13 May 1996 03:39:03 EDT." <199605130739.DAA20469 at looney_actwin.com>

> From: "Clayton L. Workman" <cworkman at quapaw_astate.edu>
> Date: Mon, 13 May 1996 00:08:20 -0500 (CDT)
> 
> What is the difference in the Penn-Plax Tri-Lux and the Ultra Tri-Lux 
> bulbs?  Does the regular tri-lux give good full spectrum to plants?

From a data sheet sent to me by Penn-Plax:

wavelength         Tri-Lux   Lumens  Ultra Tri-Lux  Lumens
----------------------------------------------------------
UV     < 380 nm      0.5%        12      0.6%           20
violet 380-430 nm    3.1%        77      4.1%          137
blue   430-490 nm   38.4%       952     29.8%          998
green  490-560 nm   21.2%       526     34.1%         1143
yellow 560-590 nm    3.6%        89      4.5%          151
orange 590-630 nm   23.5%       583     20.1%          673
red    630-700 nm    7.3%       181      5.0%          168 
IR     700-800 nm    2.4%        60      1.8%           60
                              -----                  -----
                               2480                   3350

measured Kelvin temp:           ??                   ~6200K

Bottom line: Ultra Tri-Lux has more power in the green and yellow
bands.  This may be useful to plants (algae will generally not use it)
and it gives better color rendering (IMHO).  

George

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