Someone please tell me what this is??

[kmc0091108]

Hi new to this thought I would come for some advice on this little problem of mine. Basically was coming to the last few days of my veg (day24) before turning and a few leaves have started to go like this. I am using coco 60/45, just canna products A & B so far. I have done a couple and never had this problem. Last week I turned my second light on like an idiot and the room temp rose to 45 degree luckily I went in the next day, some leaves were dried up but I just gave them a big feed and now everything seems fine until these started appearing. It is only a couple leaves per plant so hopefully I can resolve it.

Any advice would be appreciated thankyou!

 

[oldhippie64]

not sure but it looks like it coud be nute burn, did you maybe splash some on those leaves when you gave them a big feed?

 

[devils letuce]

give us a little info so we can try to help!

What Strain is it?
Is it Indica, Sativa or Hybrid? What percentages?
How Many Plants?
Is it in Vegetative or Flowering Stage?
If in Vegetative Stage... How Long?
If in Flowering Stage... How Long?
Indoor or Outdoor?
Soil or Hydro?
If Hydro, Reservoir size?
If Hydro, Reservoir Temperature?
If Hydro, what type of Medium?
If Hydro, what type of Setup?
If Soil... What is in your Mix?
If Soil... What Size Pot?
Size (Wattage) of Light? How Many?
Is it Air Cooled?
Temperature of Room/Cabinet?
RH of Room/Cabinet?
PH of Medium or Reservoir?
Any Pests?
How Often are you Watering?
Type and Strength of Fertilizers used?
Size or Square Footage of Room?

This information is necessary for accurate support to be given.