I wouldn't worry at all, your plant looks healthy and that's all that matters. Some type of weird shit is kind of normal because every strain is different and every grow is different.
With regards to the DLI, I think it's a little bit excessive unless you're adding CO2 (which I don't believe you are). Try lowering it a bit to a maximum of 40 and see if there are any imporovements.
Good Luck with the rest of your grow and enjoy the yield