This is a public-interest archive. Personal data is pseudonymized and retained under GDPR Article 89.

Re: Flourescent Lights



On Sun, 15 Feb 1998 08:16:49 -0500 (EST) Edwin G Dulin
<egdulin@christa.unh.edu> writes:

>that light intensity, not light spectrum, is vastly more important for
me to >produce top quality, stocky, deep green and healthy seedlings. I
regulate >this intensity by keeping the seedlings within 1-2 inches of 
the tubes.

>From the large response to this subject it appears that the spectral
type of the lamp used is not too important for seed starting. (I took
Doreen's advise and bought daylight lamps.) But there seemed to be
agreement that intensity is important. -----What is the PROPER
intensity?------ I have read from 1" to 6"spacing between lamps and
plants. As someone pointed out, intensity is proportional to the square
of the distance from the lamps to the plants. This means that the light
is 36 times more intense at 1" than at 6". That is a big range.

oldjohn@juno.com
John Orwick
El Monte, CA [20 miles east of Los Angeles]

_____________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com
Or call Juno at (800) 654-JUNO [654-5866]

--
To unsubscribe, send a message to: majordomo@lists.umsl.edu
with the single body line: unsubscribe sqft
Contact owner-sqft@lists.umsl.edu with any admin questions.



Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index