i know it stand for high pressure sodium so dont worry about that
but i still need to know what its best for flowering, veg or what the spectrum specifcations on hps and if its good enough use all the time.

i also was wondering what height of a plant is it best to start flowering,
and if you have a plant in veg and the light period is 12/12 will it force flowering on the young plants and if the preflowers are visable and you change the photoperiod to 20/4 will this harm the plant or cause the buds to form at an early age or what?
taderick Reviewed by taderick on . How are these baby's doing? how do you think there doing at the moment seeing as im using sunlight through windowsill im planning on getting some lights soon maybe which should boost the growth rate hopefully. Rating: 5