Crispy curved yellow leaves with brown spots *Pics

[lykken]

Look at my pictures plz

I do believe it ius heat burn, I have 3 600w in a tent, and it was at 30cm from the refelector/11.8 Inc to the light source, I just move it to 40cm/15.7 Inc..
The lighst are pretty close, 5cm/1.9inc apart. in a 3 square meters/ 32.2 Square feets

What is recomended here ?

So,.....

- What is this?? Heatburn? Overfertilization?

The plants should get their food now; should I feed them normally (w/ fert) or flush? or just a round of water
The plan is the switch to flowering modus today.... Any suggestions?Any help would be much appreciated.

http://i80.photobucket.com/albums/j179/lykken1111/Line005.jpg

http://i80.photobucket.com/albums/j179/lykken1111/Line004.jpg

http://i80.photobucket.com/albums/j179/lykken1111/Line003.jpg

Thanks

Regards lykken

Edit: I do believe I have the PH in the water under control
Edit 2: I did water with a sprinkler when I feed them the last time, could it be a combo of Nute burn of the Leaves/wil lights?

 

[pterzw]

Look at my pictures plz

I do believe it ius heat burn, I have 3 600w in a tent, and it was at 30cm from the refelector/11.8 Inc to the light source, I just move it to 40cm/15.7 Inc..
The lighst are pretty close, 5cm/1.9inc apart. in a 3 square meters/ 32.2 Square feets

What is recomended here ?

So,.....

- What is this?? Heatburn? Overfertilization?

The plants should get their food now; should I feed them normally (w/ fert) or flush? or just a round of water
The plan is the switch to flowering modus today.... Any suggestions?Any help would be much appreciated.

http://i80.photobucket.com/albums/j179/lykken1111/Line005.jpg

http://i80.photobucket.com/albums/j179/lykken1111/Line004.jpg

http://i80.photobucket.com/albums/j179/lykken1111/Line003.jpg

Thanks

Regards lykken

Edit: I do believe I have the PH in the water under control
Edit 2: I did water with a sprinkler when I feed them the last time, could it be a combo of Nute burn of the Leaves/wil lights?

I believe this is a slight nuteburn. Such a small plants do not need nutes. Give them a pure water for the next week and they will be fine.

 

[Sir Psycho Sexy]

The third pic looks like you might have splashed it with fertilizer water. I dont think it looks like heat stress but I haven't had that problem much. Unless its obviously worse at the top of the plants, I would think of other possibilities while keeping an eye on the temp.
If u flush with water and it gets better then its overfert. If it gets worse it might be a deficiency in some micronutrient.