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Offlinefedor
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Registered: 05/18/10
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Last seen: 6 years, 8 months
increase in light intensity effect on seedlings
    #432869 - 06/14/10 10:39 PM (6 years, 10 months ago)

I just put my 12 day old seedlings under a 400 mh bulb, 4 feet away, from a small floursecent.  Originally it was maybe 2 feet away and a couple leaves began to turn yellow, so i moved it.  However ,its also the first time I fed them, half strength root 66. I also transplanted them into a larger rockwool cube. Is it possible its just the combination off all of that causing a bit of shock?  Or was it simpy the change of light intensity.


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OfflineLucid
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Registered: 07/18/08
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Re: increase in light intensity effect on seedlings [Re: fedor]
    #432908 - 06/15/10 12:44 AM (6 years, 10 months ago)

pics? You probably just need those nutes to kick in. Though putting seedlings only 12 days old is kinda pushing it for a 400w,but at the distance you had them that shouldn't have effected them that much. Wait a few days and see if they improve, or you could put them back under whatever you had them vegging under before the 400w. Probably not a bad idea to just keep them under that until they are like 20 or so days old.


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OfflineDieselB
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Registered: 02/10/10
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Re: increase in light intensity effect on seedlings [Re: Lucid]
    #433449 - 06/16/10 01:15 AM (6 years, 10 months ago)

When switching from flouro to HID, some stress is normal. Four feet away shouldn't be causing you many problems. I've grown seedlings from the first day under a 600w at about three feet away.. Just don't keep them directly under the light, put 'em off to the side for a few days to let them get used to the intensity.


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Cannabis, Marijuana, Ganja & Greens >> Cannabis Cultivation

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