Recommendation for Starting Seeds Indoors

My wife starts vegetable seeds indoors in a north-facing kitchen garden window before planting outdoors. We are now looking to upgrade to LED grow lights. The lights can hang about 16" maximum above the seedlings. Would 1 PhotonBlast fixture be sufficient per shelf and also would 4000k or 6500k be best for starting seeds?

In my experience, the PhotonBlast should be a great fit for your needs!
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In my setup, I had two PhotonBlast fixtures for a 48" x 18" wire shelf. Since your shelf is smaller at 50" x 10", you may be able to get away with just one fixture, but two fixtures would provide you with a bit more high-intensity light which can be helpful to prevent "leggy" seedlings, especially if you are growing high-density microgreens or similar crops.
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The PhotonBlast fixture is approximately 48 inches long so this should provide sufficient coverage across the 50-inch shelf. Additionally, the 6500K should be a good option for seedlings, as this approximates noon daylight and should help promote vigorous leafy growth.

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Horticultural lighting (grow lights, vertical farms, indoor growing)T8 LED tube lights

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