mrZotanswered grow question 6y ago According to my experience, it's not necessary to have the light at 100% throughout the entire process.
-Seed 50%
-Veg 75%
-Flower 100%
This way, you'll save a bit on electricity.
Depending on the amount of heat your light emits, you'll have to place it closer or further away.
In my case, it's at 75% and about 45-50cm from the plants.
You can check out my diary.
Best regards and good luck!!