growing with incandesents

Discussion in 'Cannabis Grow Rooms and Greenhouses' started by steffan, May 17, 2006.

  1. steve704

    steve704 Member

    Messages:
    130
    Likes Received:
    0
    or you can just get some high intensity discharged lights for that much
     
  2. Nickelbag

    Nickelbag Member

    Messages:
    195
    Likes Received:
    0
    A 60W incandescent will produce about 900 lumens, that's 15 lumens/watt
    A 40W, 4ft florescent will produce roughly 3000 lumens, divided by 4ft, so about 10W and 650 lumens/sqft. That's 65 lumens/watt.
    A 23W CFL will produce roughly 1600 lumens, which is 70 lumens/watt.
    A 100W incandescent will produce about 1800 lumens, which is 18 lumens/watt.
    A 200W incandescent will produce about 3600, maybe 3800 lumens, which is 18 or 19 lumens/watt.
    A 200W CFL will produce about 18000 lumens, which is 90 lumens/watt.
    A 250W MH will produce about 20000 lumens, which is 80 lumens/watt.
    A 250W HPS will produce about 25000 lumens, which is 100 lumens/watt.
    A 400W HPS will produce about 32000 lumens, which is 80 lumens/watt.
    A 400W HPS will produce about 50000 lumens, which is 125 lumens/watt.
    MH ballasts don't come in 600W variants afaik. You can get a 600W HPS->MH conversion bulb though, they are about 55K lumens, which is 92 lumens/watt.
    A 600W HPS will produce about 95000 lumens, which is 125 lumens/watt.
    A 1000W MH will produce about 115K lumens, which is 115 lumens/watt.
    A 1000W HPS will produce about 145K lumens, which is 145 lumens/watt.

    One must also consider an individuals growing capacity. Not everyone has the space to use a 1000W HID setup or even a 400W setup. If you are wasting half of your lumen output on empty space/lamp distance from plants, or worse if you are over exposing your plants, then you are not acheiving the optimal efficiency.

    A typical couple of regular tokers wouldn't need more than a 400W anyways, if you've got a good perpetual system. More watts also means more heat, which means more ventilation, which also takes power, so that has to be factored in as well. In the end, the average is around 100 lumens/watt for HID setups. For equivalent lumens, incandescents burn the hottest. Flo's are coolest.

    Spectrum is another consideration. Flos have the best spectrum, incadescents have the worst spectrum (even grow bulbs). HID is best when both types are used together but even full spectrum HID bulbs don't match the PAR of flo's. PAR is more important than lumens. PAR is a measure of the ability for the plants to perform photsynthesis. Lumens is just the intensity of the visible light, which does not measure the intensity of the required frequencies for plant growth.
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice