Comment on Light sources for winter
Naja_Kaouthia@lemmy.world 1 year agoInteresting. Is that why I see hydroponic setups using those magenta lights for lettuce?
Comment on Light sources for winter
Naja_Kaouthia@lemmy.world 1 year agoInteresting. Is that why I see hydroponic setups using those magenta lights for lettuce?
Oisteink@feddit.nl 1 year ago
As the plants look green they reflect green light. So when being efficient you’re better off not producing that, and as some plants like the upper parts of the spectrum red is good. For lettuce they wants lot of photons. This is measured in MOL - hortamericas.com/…/monitoring-is-crucial-for-grow…
So you do not really care about watt, but photons. This is why HPS was the shit up until led arrived. You needed many photons and HPS had more photons per watt than “normal” household lamps.