Do you happen to know if a basic light-meter will work with the red/orange/blue-LEDs which are designed to only deal light at the absorption maxima of chlorophyll or will it need light from the full spectrum? Am 05.11.2015 um 20:46 schrieb Nhu Nguyen: > If growing under light is something you'd like to pursue, I would > purchase a relatively cheap light meter for about $30. That will give > you a more scientific and consistent way to work relative to natural > sunlight. The edges of shelves away from the cone of light that Kipp > mentioned have much reduced intensity so they're good spots for > growing more shade plants. Nhu -- Martin ---------------------------------------------- Southern Germany Likely zone 7a