I suppose you could wake them up with CFLs, give them a few hours of HPS, then lull them to sleep with the CFLs again.
Sounds complicated though.

It only tales a couple, three days to harden them to more light.
Just sneak up on 'em with the bright stuff.
And watch the temperature when you kick on that artificial sun.
Temperature is a big player in growth speed.

Aloha,
Weezard
Weezard Reviewed by Weezard on . SOMEBODY PLEASE HELP!!! I switched my plants today from 2 4 ft t12s and put in two 150 Watt hps lights and 3 hours later one of my big plants has totally dropped the leaves are all drooped over there still green the lights are 2 feet above the plants and now the rest of the plants are following in its path idk what to do I did just transfer the 3 of the plants into 5 gallon buckets but that shouldn't affect the others I need some help please Rating: 5