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here is my recent pic of my ak 47 grow under a 55 watt led light. they are about 2-3 weeks old, sorry cant remember,you know how it is.
merryprankstr,when you say you have 400 watt led light do you mean hid ecivilency or how much power they actualy use beacuse my light is only 55 and i can only fit one in my similar sixed box???
That's 435 watts actual LED output.
I can't quantify equivilant HID I'm afraid.
335wats above the canopy and 100 watts as side lighting to support the lower branches. I turn the plants 1/4 turn each light cycle.
MP
Excellent thread!
I've used HID lamps in the past, and I'm thinking about getting started with my hobby again. What kind of LED lamps do people recommend? I'd love to give it a try!
There is one additional benefit to LEDs that I have not heard mentioned anywhere else.
Light leakage.
Now to those who have a sealed room or a light-proof tent, this is a non-issue. However, as I have a small closet grow, it is a big concern for me. I cannot light seal because of ventilation issues.
Most of the light from the LEDS is not optimized for human viewing, but for plants, so right there is a big savings. Also because LEDs are so directional, the light does not bounce all over like with fluoro or HID.
If I were to quantify, from outside the closet I would say the light leakage is reduced 80-90% over my CFLs.