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GoDawgs · February 17, 2021

I have 18" wide shelves and hang two T8 shop lights over each shelf and they work just fine for me. I use one 3000k and one 6500k tube (not LED) in each fixture to try to provide a wider light spectrum. It does mean turning trays of plants around every day as they slightly lean toward the stronger tube but I don't mind as I use the time to check watering and plant health. Been using these for years.

Granted, I place the plants in a line directly under each fixture and don't cover the whole shelf with plants so you could say there's some unused area. But I've never tried doing that so I can't say plants in the middle wouldn't have enough light. There would be room for a third fixture if the fixture had a narrow reflector.

February 17, 2021	#3
GoDawgs Tomatovillian™ Join Date: Feb 2018 Location: Augusta area, Georgia, 8a/7b Posts: 1,685	I have 18" wide shelves and hang two T8 shop lights over each shelf and they work just fine for me. I use one 3000k and one 6500k tube (not LED) in each fixture to try to provide a wider light spectrum. It does mean turning trays of plants around every day as they slightly lean toward the stronger tube but I don't mind as I use the time to check watering and plant health. Been using these for years. Granted, I place the plants in a line directly under each fixture and don't cover the whole shelf with plants so you could say there's some unused area. But I've never tried doing that so I can't say plants in the middle wouldn't have enough light. There would be room for a third fixture if the fixture had a narrow reflector. Last edited by GoDawgs; February 17, 2021 at 07:08 PM.