Leave it a week or so then , miracle-gro used in the right measures is as good as anything for vegging though you'll probably want something more specific when flowering .If you cant get to a hydro shop a good rule of thumb i found was most tomato plant feeds tend to work well (coco a+b is the d/bs).Try 2x60/80watts cos she aint gonna get too big under 40 watts and the process will be easier and yield better with a sodium as opposed to flours especially bein a ftg .I was gonna mention balanced water (getting PH levels helped me no end) but i'm gettin ahead of myself (read up and get some info) and from there it's all trial and error. P.S. you're absolutely sure it's a female ,seedlings don't usually show their gender till into flower