be careful with the 'experimental' feeding ... I suspect you may be over-watering, maybe ... be sure the plant goes thru 'wet & dry cycles' ... try a quality fertilizer, like Fox Farm, for instance ... mix it at 1/2 normal dosage, and apply once per week, only ... more plants are damaged with 'over-love', than anything else ... it's a lot easier to add more ferts, if needed, than to correct an over-feeding problem ... also, don't fret over an imperfect leaf, the best plants aren't 'perfect', either ... good luck :thumbsup: