When does seedling stage end

[Garden Knowm]

Hi Mean,
Are you asking when you can switch to a MEtal Halide or some other HID?

You can use the HID right away. Just becareful you don't torch your seedling.

Use your CFL's 24 hours a day and introduce your HID 1 hour(on) a day.. and each day the seedling gets older leave the HID on an addtitional hour... by the 2nd week you should be able to leave the HID on 24 hours....

: )
knowm