Quote:
Originally Posted by banidles
... Going to set up a warm mist humidifier and 2x LED grow lights once I get the spectrum nailed down ...
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You'll need 50 to 75 Watts/sq.ft. projection at a color temperature of 6400 to 6500 Kelvin. You can't achieve that spectral intensity from LED's. You can get the intensity but not the spectrum from arc lamps such as HPS. Just about the only way to get both from artificial light is with fluorescents. If you use standard daylight T5HO you'll need from 16 to 23 4' bulbs per 4' by 4' area. However, there is a Very High Output version of this bulb sold in pre-assembled fixtures: "Sun Blaze T5 VHO 48". Here's one of several sellers:
Sun Blaze T5 VHO 48 - 4 Ft 8 Lamp Fixture