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Ricky Shaw · March 17, 2018

Unless the warmth of HPS benefits you, or you're trying to cover a large area, they're overkill. Seedlings just don't require that much light. T12's in simple daylight bulbs (6500k) have turned out beautiful trays of seedlings for years.

March 17, 2018	#38
Ricky Shaw Tomatovillian™ Join Date: Aug 2015 Location: Zone 6a Denver North Metro Posts: 1,910	Unless the warmth of HPS benefits you, or you're trying to cover a large area, they're overkill. Seedlings just don't require that much light. T12's in simple daylight bulbs (6500k) have turned out beautiful trays of seedlings for years.