Is this plan burned ?

[SilentSleeper]

First of all I'd like to excuse my bad english, contrary to growing english isn't one oft my best sides (at the moment I'm of the impression I'm failing with that, too).

It concernes one of my Mandala#1 - the plant looks somehow burned, though the distance to the lamp is more than 50cm, all the other plants look well, except for that one. It happened about a weeks ago, an it came overnight, it dind't get better, a little bit worse I think. The day before I did nothing unusual, the plant looked fine.

Actually there is another one that is not that well, I think it's just overfert, but to be sure I'll upload a picture of it as well. It's not that bad, might be overfert, but I'm not sure, as think didn't get much fertilizer. The upper tips are yellow, and on some of the upper leaves there are parts thet seem to get yellow, it nor starts at the edges of the leaves neither in the middle, is there a possibility that is is not an overfertilisation ?
Some Basic Info's

What STRAIN are you growing?
- concerning Mandala#1
What was the establishing technique? (Were the seed or clone?)
- clones
What is the age of your plants?
- 42nd day flowering after two month oft vegetativ stage (picture is 7 days old)
What substrate/medium are you using?
- soil
What Nutrient's are you using?
- Hesi, I feed them twice a week, about 300 ml with an EC of 1.0 an pH 6.3
What size bulb are you using?
- 4,5l / 7l
What is the Day/Night Temp?
- 20°/30°C below the lamp (400W)
Is the fan blowing directly at plants?
-no
Is your water HARD or SOFT?
- soft
Are plant's infected with pest's
- No pests, no other kind of trouble yet

If there are things missing please tell - it pains me to see my darlings like that. I'll be gratefull for any kind of help. The left one is the 'burnt' one.

thank you in advance



I tried to post thumbnails, as I'm used to but in didn't work... :sad:

 

[chubbynugs]

Top plant looks like it has purple genetics in it and the bottom pic has very minor burn. Not to the point to be worried though.

 

[winkdogg]

those are perfectly normal reactions in flower ...the plant is sending important nutes away from the leaves into the buds.. if any thing its asking for more nutes but if your coming to the end of flower it just right!

 

[SilentSleeper]

here is a pic I made today - actually I'm pretty sure that the plant is not really healthy, it's the 42 day of flowering, which means there still two weeks left till harvest.

What's strange is that all the plants are treated the same way, same water, same distance to the lamp, nevertheless it's the only one with that kind of problem, the others have at most yellow tips.

 

[winkdogg]

ok now we have nute burn get her some low strendth nutes cut off the really bad stuff..she will be fine dont over water but she need a nice fresh supply!!!