Woomeister
Well-Known Member
You only have the equivalent of 300 Watts of incandesent light.ok so this seems to be turning out be be just an arguement over wattage...so as far as my bulbs go im running (3) 26 watt cfl's which are producing a total of 300 watts....my baby seems to be growing pretty quick... so back to the original question....when is the perfect time to start flowering? i have read that when the plant gets its 6th set or so of leaves, that would be a good time to switch over? correct?
What is a "lumen" and why do I need them?
Growing plants indoors requires a lot of light. Lumens are a scientific term for measuring the visible output of a lamp (or "light bulb" or "bulb"). A standard 60 watt incandescent lamp is rated at an output of 900 lumens. A 400 watt Metal Halide lamp produces 36,000 lumens and a 400 watt High Pressure Sodium lamp produces 50,000 lumens. Generally High Pressure Sodium lamps are more efficient light producers (more lumens per watt), these lamps produce a range of 100-140 lumens per watt, while Metal Halide lamps produce a range of 70-110 lumens per watt.