seeds under light

Message Topic Search Topic Options Post Reply Create New Topic Printable Version

   Hey fellow growers,
Wanted to ask a question about how soon germinated seeds can be placed under fluorescent lights.
I've just germinated some jack herer (heated propogator)and as soon as they broke out of the soil I put them under  fluro light, (so far so good) but in the FAQ section on germination it states that they should not be under light until two sets of serated leaves have formed.
As I've had to improvise to get the seeds to germinate in the first place (winter temps) I dont want to take any chances.
As always any and all advice greatfully received. Hh

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version
handsomehamish Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Seedling Joined: 27 June 2006 Location: Scotland Online Status: Offline Posts: 30	Quote Reply Topic: seeds under light Posted: 06 November 2006 at 19:13
	Hey fellow growers, Wanted to ask a question about how soon germinated seeds can be placed under fluorescent lights. I've just germinated some jack herer (heated propogator)and as soon as they broke out of the soil I put them under fluro light, (so far so good) but in the FAQ section on germination it states that they should not be under light until two sets of serated leaves have formed. As I've had to improvise to get the seeds to germinate in the first place (winter temps) I dont want to take any chances. As always any and all advice greatfully received. Hh

farmer mick Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Advanced Grower Joined: 28 June 2006 Online Status: Offline Posts: 1083	Quote Reply Posted: 06 November 2006 at 20:34
	Just keep them a few feet away from the light until they've developed a bit, them move them closer. You shouldn't have any problems...

Bowen Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Advanced Grower Joined: 05 September 2005 Location: Ireland Online Status: Offline Posts: 436	Quote Reply Posted: 06 November 2006 at 21:08
	I think thats more to do with the high intensity lights though, I would think that a fluro would be alright? Best to be carefull anyways, keep them at a small distance from the light. Bowen
	Things are looking up.........grind through it and you'll get there :)

CanadianBud Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Advanced Grower Joined: 01 October 2006 Online Status: Offline Posts: 71	Quote Reply Posted: 07 November 2006 at 03:30
	I've got some seedlings that are under a 125 W flourescent and they have been under there since I put the seeds in soil and they're still doing fine so i think it should be good cheers

Ganja Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Administrator Joined: 13 June 2003 Online Status: Offline Posts: 6798	Quote Reply Posted: 07 November 2006 at 12:07
	Seedlings can go straight under lights. Certainly fluoros, and even HID if you're careful to maintain a good distance and make sure the HID doesn't heat up the atmosphere too much (partly from its own heat, partly because seedlings are often started in relatively small spaces). I think I'm going to change that part of the FAQ...

mike Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Advanced Grower Joined: 20 March 2005 Location: Greenland Online Status: Offline Posts: 420	Quote Reply Posted: 07 November 2006 at 18:47
	if putting them under fluoros just keep them with-in 4" inches from the tubes at first then as they grow just keep the tubes at least 2" inches away to keep the leaves and tops from burning
	help my plant's fell over and can't stand up

handsomehamish Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Seedling Joined: 27 June 2006 Location: Scotland Online Status: Offline Posts: 30	Quote Reply Posted: 07 November 2006 at 19:42
	My thanks to you all. Babies are currently 40cm from 4x60 Watt 5 foot tubes, in a vented propogator, under 24 hour light and are looking good to go. I want them in the flowering box as soon as possible as I dont have too much height to play with. Any info on recent JH grows anyone, anything at all would help as this is my first JH grow. I would be particularly interested in time, height achieved, anything at all though. I got my fingers burned with the height thing last time round due to my inexperience. Hh

obsessive Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Grower Joined: 05 June 2012 Online Status: Offline Posts: 43	Quote Reply Posted: 09 July 2012 at 17:09
	i am seeking advice on fluorescent lights. I am planning my first autumn grow.I have a small tent for the purpose and 150 watt fluorescent light. How long can i keep them under that light before moving them into the bigger tent under 600 watt HPS

mellow Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Advanced Grower Joined: 12 August 2010 Online Status: Offline Posts: 3295	Quote Reply Posted: 10 July 2012 at 14:16
	Hey Obsessive, If the tent you are going to veg them is ventilated then stick the fluro 1to2" or so over the tops for the first few weeks, If there's no ventilation then have it 4to5 inches above them. Make sure you have a small ossilating fan blowing across them, These 2 ways will stop them stretching and get them big. Whack a hydrometer/thermometer under the lamp to make sure it's not too hot and you're away. How long you can keep them under the 125 is anyone's guess? 4 plants maybe all the way. How big is the small tent? 80cmx80cmx100cm's?

Proteus Members Profile Send Private Message Find Members Posts Add to Buddy List Sensi Advanced Grower Joined: 09 November 2009 Location: Nox Online Status: Offline Posts: 892	Quote Reply Posted: 10 July 2012 at 21:32
	The size of the pots will matter greatly. Can keep a small plant alive ina small pot under a CFL for a very long time (years? forever?) if you are careful and it will sit there till you are ready to use it. Small pots will mean very little if any branches tho. Careful they can dry up quick once they get established. Because you are feeding very little/not at all, growth slows, but once transplanted into a larger pot of fertile soil, growth returns with a vengance.
	Master of life! Bringer of death!