Is this Nute burn?

**Denzil** · 02-02-11, 06:46 PM

These are two of my seedlings which are two weeks old, in the past 24 hours they seem to have gone a yellowish colour which I know isn't normal at this stage of veg. My last res change was on Thursday, none of the roots were in the res's back then, but a week on they have all made it there about 4 days ago. I did have to dilute the mix a bit as it seemed to be a higher ppm reading than it was when I initally made the mix.

pics:

**wert** · 02-02-11, 06:52 PM

what are you feeding and how much ?

**Denzil** · 02-02-11, 07:07 PM

GHE nutes 3 part (micro, flora and bloom/green, pink, black), I think you use them. Well this time I put in 2.5 ml of each part, plus 40ml of rhizotomic. All to 10L of water, but then I added more water, so I added another 1ml of each of the GHE nutes. I would of thought the nute burn would have started once they hit the res instead of after several days of being in the res.

**katy** · 02-02-11, 07:41 PM

i have come across this before, with the yellowing starting from the petiole, but i can't remember what was diagnosed

but as you said,if it was nute burn , it would have shown sooner, and it doesn't look like burn to me anyway

**katy** · 02-02-11, 07:44 PM

oh, thats it, LIGHT BURN!!

are your tender young shoots under a super bright light?, back it right off and drop it a bit every day or two. you will find that they will not turn back to green for a long time, but growth will carry on as normal otherwise

**Denzil** · 02-02-11, 07:50 PM

Originally Posted by katy

oh, thats it, LIGHT BURN!!

are your tender young shoots under a super bright light?, back it right off and drop it a bit every day or two. you will find that they will not turn back to green for a long time, but growth will carry on as normal otherwise

Yea, they are under a 400w MH, with a parabolic shade. they spent the first few days under a 125w cfl though. I do think that i did have the light a bit too close for a certain period of time. Yesterday, the set of 3 fingered leaves were pointed almost upwards in a V shape. Does that mean the light was too intense?

**Denzil** · 03-02-11, 01:56 AM

Do ylou reckon this could be due to the plant feeding off itself. Tomorrow is res change day so I'll be upping the doseage to 7ml of each nutrient per 10L