Yellowing leaves, why?

I know about the high humudity, It´s my first time growing in this tent and I am experimenting with fans and carbon filters. The high humidity is caused by the carbon filter as It blocks the air flow and by the small tent. The plant dont seems to not have any problems with the high humidity but I am worried about the buds getting mold, so today I took off the carbon filter. And I hope It will go down to around 60%(now its around 80%, but I will play with my code and will bring it lower). The smell is getting very strong so I don´t know how I will manage to live in the same room. About the nutes, the dosage should be fine, I looked up at Biocanna´s webpage and they say 5,3ml for 1,5l for standart fertilization and on the bottle it says 1:250 so 6ml for 1,5l. It´s organic fertilizer. I am getting some run off, and ph should be somewhere around 6.

Go with what hashy said mate