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retiredprof

HID Height Over Seedlings

retiredprof
15 years ago

I'm running an 800 watt HID system with reflector over a few trays of tomato, pepper and eggplant seedlings. All are doing fine. I also have an oscillating fan on when the lights are on (16 hours a day).

I keep reading that the seedlings should be 2' or so under the lights (that's where they are), or high enough that I start to feel heat on the back of my hand at their level. Seems a little unscientific, but is that a good measure of distance?

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