looks to me overwatering.........way i water my soil plants is to water, feel pot and feel daily until lighter 1/2 as light of when fully watered the next day i water again.........i never water daily until they are 4+ ft tall when they are drinking 1 gal a day........looks like it is in to small of a pot too........need to transplant into a large container.........more roots = more and bigger buds