hps lighting question

J

Jah (b)less

Member

• Aug 6, 2009

• #1

I want to add hps lights in my GH it see if i can get a better yield, densier flowers and possibly shorter flowering times. How many hours would i need to run them for this to work? I know they are used in commercial tomato crops to enhance flowering for a few hours a day. Anybody doing this?? and would it be better to run in the morning or late afternoon?

 

B

blackburngrower

• Aug 6, 2009

• #2

not got any knowledge of this but if i was you id run them for a few hours in the late afternoon whens the suns not as bright

 

2

2uptown

Member

• Aug 13, 2009

• #3

id run them whenever the sun is not hitting them directly

 

yortbogey

To Have More ... Desire Less

Veteran

• Aug 13, 2009

• #4

yep...i'm runnin 2k hps...outside right know...works great on cloudy dayz or inbetween BRIGHT direct sun.......works...g8t.......just stay under 12/12.....
persoanlly i go 10 hrs gooddirect sun or light....and a hour transisiton on either end.......works just fine...............

 

2

2uptown

Member

• Aug 13, 2009

• #5

yup late season we pull out the generator and fire up 10k just so the sativas really have the chance to chunk up

 

DocLeaf

procreationist

ICMag Donor

Veteran

• Aug 23, 2009

• #6

They use this method at universities...

run the lamps: before or after the heat of midday. This will help warm GH temps during the evenings / over night through winter