No, it wont hurt at all. I think I will try it though on one of my upcoming grows. I have to see for myself. Curiosity gets the best of me more often than not.
So I am going to try and debunk this myself with these critical ladies. They are the same genotype since they came from the same mother so they are identical. When they are ready for harvest I will be placing one into total darkness for 48hrs the other I will chop right away. This should give me a good idea of wether this dark period actually changes anything. Both these plants have been treated and grown the same way in the same environment so the only difference would be the dark period! I’m interested to see if it indeed makes a difference or if it’s just adding 2 days to your harvest