Too much light..? Heat?

BustedParaphernalia

Well-Known Member
I had my 6 baby seedlings under 2 x 26W CFL 1,600 lumens 6500K bulbs. I decided that I wanted to add two more of the same bulb for more light, so I altered my lightbox to accomodate them. Unfortunately, I hadn't installed them properly, and one of the bulbs ended up falling down a bit so that it was touching one of the seedlings (my biggest and best looking one), and this is what happened to it:

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(The cup had been cut to accommodate the huge explosive leaf growth prior to the incident, the cup was not burned or anything.

Totally dead, right? Or could it maybe shed its leaves and grow new ones if it has good root structure? If it's totally dead it still has uses as I can explore the soil and find out how the root growth looks at this stage in its life for future reference (knowledge is always good and I'm an optimist, so for me most failures are still useful).

The other seedlings were fine since the bulb had not touched them, but their soil was very dry so I had to water them. Since then, they have been fine, but some of their leaves are yellowing slightly and pointing upward a bit instead of laying out flat.

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Does this indicate that they are receiving too much light? Or is that because of the heat?

For reference - my seedlings are in Fox Farm Ocean Forest soil, and until this light issue there had been no problems otherwise - they were looking amazing, so I don't think this is any type of nute burn or other kind of deficiency, apart from maybe lack of water due to the soil drying up. But I have been watering them well (but not overwatering) and the fact that their leaves are pointing up seems logical to me to indicate too much light (if that were even possible) or, the most likely issue, too much heat.
 
hey man lots of times new growth is a lighter green but they will go dark as it grows out, give it a few days and see if it doesnt darken up. and as for the leaves pointing upwards thats nothing to worry about my plants do this all the time, its when their drooping id start to worry
 
I know. But the leaves were already green, and this problem came up after the addition of the new lights and the fact that one of my plants got totally killed, so it's only logical to believe that the rest of the plants got harmed somehow. What happened was not natural. I looked closer and noticed that some of the leaves even look singed.

I can only hope that this tissue damage does not effect future growth.
 
yea if you can see it singed prbly got burned, how far are your lights now? i keep cfls like 2in away from my veggin plants and they do fine, but they do burn plants if kept to close w/o fan on em
dont worry they look fine well at least the last 3 pix, i have burned many plants like this they will bounce back
 
Yeah.. they were about an inch away. They had been further but I raised them that morning. Then I went out and bought two more bulbs, changed up the light box, but didn't lower them because I'm stupid. Short story: too much heat; bad.

I'm going to buy a small sheet of lexan off eBay and somehow attach it to the bottom of the lightbox. Add in a fan and some vents and then I'll be able to put it right up next to my babies without them burning.
 
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