
Originally Posted by
Brian d'marge
so if I went to akihabara, looking for LEDS , what would I be looking for, to be able to gro lettuce all year round in my office would be awesumanal .... pity I dont smoke as , i could be rich ..... rich I tell you
Stephen
Short answer, the absorbance maxima of chlorophyll (a) are 430-440nm (blue) and 660-680nm (red) athough environmental conditions do play a part. The peaks are quite sharp, so anything much outside these ranges will do fuck all for your plants.
A big arse array of bright LEDs will make for some expensive lettuce, though, unless they are very cheap in Japan. Other bulb types are often used and are a bit cheaper.
Redefining slow since 2006...
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