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Good lights for distance?

This is a discussion on Good lights for distance? within the Semi Hydro / Lights / Greenhouses / Accessories forums, part of the Orchid Culture category; I have been using the hot burning AgroSun dayspot bulbs (which I would love to ...

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  1. #1
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    Default Good lights for distance?

    I have been using the hot burning AgroSun dayspot bulbs (which I would love to replace) as supplemental lighting for my main grow area. I keep reading about lighting options on-line, but have not come across any fluorescent lighting that would seem to work well from a distance of about three to four feet. Has anyone here tried supplemental tube lighting (or any lighting) at that distance?

    Thanks

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    Has anyone here tried supplemental tube lighting (or any lighting) at that distance?
    Don,t know much about flouros but HID or HPS work from that distance , these run hot so probably not what your looking for.You can get venting kits for them to remove the heat but this would be more than supplemental lighting.
    Basically i think to have usable light from 3 to 4 feet your going to need high wattage & high wattage means heat , doesn,t really matter if it,s flouros or HPS.My 400w HPS will heat up my 6 x 6 x 8 growroom upto the mid 70,s with the out side temp below 40f(the room has a small 6" x 6" vent to the outside which is always open).

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    Yeah, after looking and looking on-line I was thinking that would be the case. Ah well...maybe...

    Is your lighting set-up your plants only source of light, or do you have windows in that grow room?

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    jenn, light intensity falls off as a square of the distance. So something four feet away from the bulb is going to get 16 times less light hitting it than something one foot away. If you want the plants to receive the same amount of light at 4 feet as they would at one foot from a single bulb, you would need a bank of 16 fluorescent tubes.

    That's a lot of heat, any way you look at it. You're probably going to be better off in the long run anyway going with a HPS system...

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    Ah well...someday I'll have a greenhouse and only have a million other things to worry about...

    Thanks for the information Louis, and THANK YOU FOR THIS FORUM; you guys are really great to do all of this.

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    Is your lighting set-up your plants only source of light, or do you have windows in that grow room?
    There is a window but it,s boarded over for insulation.
    I,m going to try Ceramic Metal Halide this growroom season , these are a straight swap for HPS bulbs.The advantage being is that they give off full spectrum light , good growth & flowerin.The HPS bulbs i used did the same but the light given off is sort of pinkish & almost impossible to take descent piccies in the growroom with the HPS system running , the ceramic metal halide gives off what looks like bright daylight.

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    Very good to know since it looks like I will need to go in that direction. Thank you

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    Gee - I feel like a wimp grower with my t-5 flourescents as supplemental winter light....

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    Judging from your plants and blooms, you are no wimp!

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    Quote Originally Posted by Diane
    Gee - I feel like a wimp grower with my t-5 flourescents as supplemental winter light....
    @ my latitude(basically the same latitude as Labrador Canada) i need more than just supplemental lighting , now if i lived in CA i wouldn,t really need such a setup.
    My Paphs & Phrags really seem to grow faster in my growroom than in the g/h but that is mainly down to the growroom being such a controlled enviroment.
    I simply move the plants to where they get maximum light.In the g/h this isn,t so easy(g/h is to small for a lot of variation in conditions).

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