Maybee i didnt explain myself correctly. I have seperate veg and flower rooms. 600W hps in each. One on 12 hour, the other on 18. Obviously i wouldnt want the plants in the veg room to go into flower, which they would if i lowered the light hours to 12 to save electric, so could i run the veg light for an hour in the middle of the dark cycle, therefore only using 13 hours of electric, instead of 18, and still keeping the plants in a veg state.

? ? ? V.