Lighting setup

greenhomeNovember 16, 2012

Grow lamps were too expensive, so I purchased a fluorescent fixture and two T8, 32-watt fluorescent lamps -- one cool white, one warm white. Now I'm wondering if that's enough light to grow herbs for winter use and start seeds for the garden, in the spring.

I've looked and looked, and can't find the optimum number of watts required for growing indoors, and would appreciate some advice from experienced indoor gardeners.

Thank you.


Thank you for reporting this comment. Undo
edh87(7a - Durham, NC)

I found this thread: combined with this wiki page: to be very helpful. Looking at the amount of lumens the bulbs put out, not watts, I found that two T8 bulbs produced a good amount of lux for a 4ftx1ft area. It was comparable to the amount of lux for "full daylight" according to the wiki page. But not all T8s produce the same amount of lumens, so you should do your own calculation. (Lux = lumens divided by area. So two 4ft T8s span about a 4ft by 1ft area). Of course, not all of the light is staying in that 4'x1' area, but I thought it was a good enough approximation, and one that will be more true if you use shiny stuff to reflect the light back onto that area. One note of caution - the thread I linked at one point confused "ft-candles" and "lux." A foot-candle is the imperial measurement of amount of light per area. Lux is the metric measurement. One foot-candle equals about 10 lux.

Good luck!

    Bookmark   November 16, 2012 at 4:26PM
Sign Up to comment
More Discussions
Timers that reduce and increase lighting to simulate seasons
I was talking to MesaGardens today and he mentioned...
ebay LED growlight fixture for houseplants?
I was on ebay saw all the good deals on the awesome...
Having problems with seedlings this year
I have been starting seeds under lights for about 10...
Seeking advice about current indoor seed starting setup
Hello, I am new to gardening and would like to start...
My indoor garden setup - any improvements?
This is my proposed setup for my indoor garden. I'm...
© 2015 Houzz Inc. Houzz® The new way to design your home™