hps lighting question - Growing in Greenhouses - International Cannagraphic Magazine Forums

Jah (b)less · 08-06-2009, 02:45 AM

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?

08-06-2009, 10:20 AM

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

2uptown · 08-13-2009, 04:56 PM

id run them whenever the sun is not hitting them directly

**yortbogey** · 08-13-2009, 05:00 PM

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

2uptown · 08-13-2009, 05:50 PM

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

DocLeaf · 08-23-2009, 08:28 PM

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

08-06-2009, 02:45 AM	#1
Jah (b)less Need money for weed Join Date: Jan 2009 Location: out there in the distance Posts: 115	hps lighting question 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?
	Quote

08-06-2009, 10:20 AM	#2
blackburngrower Guest Posts: n/a	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
	Quote

08-13-2009, 04:56 PM	#3
2uptown Member Join Date: Mar 2009 Location: in the 530 yo Posts: 146	id run them whenever the sun is not hitting them directly
	Quote

08-13-2009, 05:00 PM	#4
yortbogey To Have More ... Desire Less Join Date: Sep 2008 Posts: 10,983	yep...i'm runnin 2k hps...outside right know...works great on cloudy dayz or inbetween BRIGHT direct sun.......works...g8t.......ju st stay under 12/12..... persoanlly i go 10 hrs gooddirect sun or light....and a hour transisiton on either end.......works just fine............... __________________ i got a river for a soul... Darlin' I'm a nightmare... Dressed like a daydream~~~
	Quote

08-13-2009, 05:50 PM	#5
2uptown Member Join Date: Mar 2009 Location: in the 530 yo Posts: 146	yup late season we pull out the generator and fire up 10k just so the sativas really have the chance to chunk up
	Quote

08-23-2009, 08:28 PM	#6
DocLeaf procreationist Join Date: Jan 2006 Location: I'm here... Posts: 9,470	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 __________________ 떨 / erb roots culture peace love unity !!! DANGER GLASS WEED THREAD !!! https://www.icmag.com/ic/showthread.php?t=42251 FRITILLARY SEEDS ... https://www.seedboutique.com/catalog/index.php?cPath=86 *REGULAR ORGANIC SEEDS FOR ORGANIC GROWERS !!*
	Quote