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The original was posted on /r/vegetablegardening by /u/RecordLegume on 2026-03-09 02:07:50+00:00.

Top comment:

I don't use domes after they sprout. It deflects too much light. All that water vapor inside prevents the light from getting through. It also "makes it rain" inside the dome. You don't want that. And if you're using heat mats you don't want them under any cells that have sprouted. Once you see the green...remove the heat mat.

Move the heat mat to under the ones that haven't germinated yet if possible. You can put the dome on at night when lights are off. But you definitely don't want all 3 on during the light period...light, dome and heat mat. Unless they're in a really cold garage or basement.