Whats wrong with this leaf?

[geezy]

Woke up today. Went to check up on the girls and 2 leaves had this and they were dry and crispy also. Day 62 Northern Lights autoflower from Sensi Seeds, ive had some humidity issues last couple of days but kept it below 60 tho.

 

[Muddy]

Looks like it could be a calcium deficiency but to make a proper determination we will need more information. Type of soil being used, lights, temperature, what nutrients at what strength and how often, pH of feeds, pH of run off. Deficiencies can be caused by a lack of nutrients or a nutrient lock out caused by the pH being out of range. Also, pictures of the whole plant, taken in natural light so we can see the true color of the leaves.