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calculating what I need for supplemental light
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Posted by hairmetal4ever Z7 MD (My Page) on Wed, Jan 27, 10 at 9:27
| If I decide to build a greenhouse (possibly one that doubles as a sunroom but that's another topic) - I am debating whether to supplement with some HID lighting.
If I use HPS, what wattage would I need, and how many, to bathe an area about 10 feet wide and 20 feet long with ~1500 footcandles of light, to supplement the natural winter light I'll get? |
Follow-Up Postings:
RE: calculating what I need for supplemental light
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| Roughly, 300K lumens or 2400 watts of power. Mike |
RE: calculating what I need for supplemental light
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| OK, dumb question... In a greenhouse, what would be the best location to place the ballasts so they don't have a risk of getting wet? |
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