How To Use Progressive Web App aka PWA On 420 Magazine Forum
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Keeping the proper distance between your full spectrum LED grow lights and your plants is important to robust photosynthesis and growth. Your LED grow light provides the wavelengths of light your plants need for growth and flowering. ... grow lights are formulated to the photosynthetic activation radiation (PAR) wavelengths necessary for plant growth. Plants will reach for the much coveted light source just like they grow towards the sun in outdoor conditions. The general rule of thumb is to increase the distance between the top of the plants’ canopy and the light source as the light becomes more intense. This means that hydroponic LED grow lights of different power ratings will perform best at different distances
Since LED grow lights emit 90% less heat than traditional HID lighting such as high pressure sodium or metal halide bulbs, your plants will not dry out or burn if you happen to place your LED grow light to close to your plants. However, your plants’ growth will be stunted if the light is hanging too low. Within a week you will notice that your plants are not experiencing robust growth and the leaves may become discolored. If you do experience this result, adjust by increasing the distance between your light and the plants
that looks higher than 18"? do they really run that hot? I ran a hot 150 watt hid 6" away from my plants and they survived. I moved it up to 12" and that was the sweet spot.
I've heard of LED's killing young plants from being too close but I've no idea how it happens. It can't be heat but maybe it's like we can get burnt on cool sunbeds by UV light, they get burnt from some or part of the spectrum in a similar way?