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Re: Red light, green light, metal halide daylight

Karen Randall wrote:


>>I've been growing an awful lot of different plants for a pretty long time
>>with a number of different bulbs.  I've seen only _very_ minor responses to
>>changes in bulb spectrum.  What I _have_ seen over and over is that most
>>plants grow faster and better with more INTENSITY (within limits) as long
>>as all other plant requirements are met.  I choose my bulbs in terms of
>>efficiency and the way I like my aquriums to look to my eye.  Beyond that,
>>I am only concerned with providing _enough_ light.

I am currently using 175 watt 4200K metal halides bulbs at a cost of about 
$25 Cdn each. I finally found 5200K bulbs but they are $77 Cdn each.

For people that have switched to a 5200K (or comparable daylight) bulb - have
you noticed a minor or major impact on plant growth (keeping all other plant
requirements the same)?

Steve Turner
"The Frugal Gardener"