New Grower New grower question about droopy leaves

[giogio8]

8 weeks flowering! Tomorrow I will harvest for the first time.
This topic started for the problem at leaves.I just kept posting here because I thought it may helps other new growers.
After all the problems I think we made it! Thanks everyone for your advices!

The leaves are curling and I have no idea why they are look like that.Is it because the heat? The last 4-5 days temps were up to 33-34 Celsius.Any idea about this situation?
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[americano56]

looks like a mag problem, get yourself some epsome salts and spray your leaves!

 

[SAVAGE]

What's your ph run off? What's you ph of the water you are feeding it? How big is your pot?