Leaf tips rolling up, creased leafs

[GtotheA]

So I will attach some photos in which you can see that something is a little wrong with the plant. The leaf tips are rolling up - i'm pretty sure it's beacause the heat it was unbearable couple last days outside so it was hard to keep the box cooled. 

As i had put and additional exhaust fan with a carbon filter on it the temperature had dropped to around 28 celsius previoslu it was around 30 even 31-32 degrees. More than about the rolled up tips i'm worrying about those wrinkled spots that had appeard last time i checked the plants, on one of those pics i underlined the spot that i;m talking about.

 

Plants age : around 20 days from germinating - used coco pellets after the sprouts showed

Soił : coco 80% and perlite 20%.

Temperature : Day around 30 at first 2 weeks now around 28 (i know it was to high)

                    Night : around 23 

Watering : With powedr feeding every 3 day more or less i try to see when they are dry. Around a liter per plant today, earlier less.

PH : around 5,5-6.

Humidity : around 70% sometimes higher, most of the time a litlle bit lower.

Light power : diamond serires xml 350 x 2 

height from plants : at begining 75 cenitimeters now around 65. This is what the manufacturer wrote on the description.

Size of the room : 2,4 lenght x 1,2 width x 2,4 height (meters)

Venitilation : 2 exhaust fans witg carbon filters : around 450m3/h and one fan that is getting air in the box 100m3/h it has a pipe to take the air from outisde the building. 

 

I'm using DNA genetics seeds - 6 plants of purple og#18 and im using powder feeding mostly indica for it. It is 70%indica 30% sativa. Other 6 plants are Lemon og kush which are 60% indica 40% sativa and i'm using the powder feeding hybrid for it.

Would be really happy if anyone would have any suggestions how to brings those back to health.

with greetings Gouda

[GtotheA]

hello i would really appreciate some advice, anyone here could say anything about those leafs ? here is a better picture of the half of the box with all 6 plants. Next time i will have an oppurtunity I will take more pictures of the whole room. Thanks again for any feedback 

with regards Gouda

[Dust]

Hello man, if your leaves feel a little dry and you said it has been very hot thse last few days it is probably due to the heat. When there is too much heat the water of the leaves evaporate faster than it is replaced, and so this kind of things happen.

 

do the stems of the leaves look purple or is it only on your pictures? It looks like she has some trouble eating something on the pics but the light is a little bit strange so i could be wrong

Have a good grow

[GtotheA]

Hello, so i guess i will just try to keep lower temperature, good that those hot days are gone now. I'm using LED lights so i think it's because of the pink light it gives, but i'll check next time possible. If the stems are purple/red isn't it due to the temperature amplitude ? IF not what should i do to help them ? or do you mean that they are getting to much nutrients ? or the water that they are getting is bad ?

 

http://forums.strainhunters.com/topic/8348-skywalker-kush-in-dwc-under-led/page-2#entry128095

I have seen simillar issue with the reds stems on DNA genetics with a LED setup so i think it may be simillar situation to what 'Thusweedman' has ?

[Dust]

if the stem is red like it seems it is probably a little PH problem, it happens when the plant doesnt eat correctly or can not absorb the nutes correctly, try to check your run off water to see if you have salts or something like this already, i think they are just probably a little bit hungry

 

Have a good grow

[NL Seattle Greg]

Aloha, Purple can be genetic or a magnesium, calcium, boron imbalance that locks things up. During real hot weather lower EC and keep soil temps in a reasonable range.

[Jose.gh]

In will cause the leaves can also be so excess moisture, I've seen more times. The reasons may be many, fungi, moisture, excess nitrogen .... but if the plant is progressing well and the rest of the leaves do not have problems, you should not worry. 

 

 

Greetings!

[Dlin2d]

substratum saline. Food with all bad. immediately clear that calcium is not enough and more iodine. but at the same time, overdose with iron. PH should be trying to exit. If I'm wrong then Correction supply. in any case it is necessary to start the shed water and measure the output PH. Respect