A bit of reading here:
https://www.thcfarmer.com/forums/basic-growing-information.5/
https://www.thcfarmer.com/forums/nutrients-and-fertilizers.168/
https://www.thcfarmer.com/forums/general-indoor-growing.6/
And check out some grow diaries:
https://www.thcfarmer.com/forums/grow-diaries.54/
Any...
A fan may be useful in getting some air moving around your plants and might help strengthen those stalks, it may cause your soil to dry out a bit faster as well.