I need some help please, I'm a beginner with some questions, please help?

Alright, this is my 2nd grow outdoors, my 1st grow three of my plants got eaten and messed with, so we built a fence around the plants, but we did get 65 grams total and tyhe buds were soooo goood looking and smoked amazing, all I used was Miracle-Gro all purpose plant food and MG bloom booster, and worked pretty good, but now on my 2nd grow I have 7 seedling, 1 showing female already, I'm wondering what nutrients should I buy? When should I used them and how? I have this SuperStrive bottle I've put in a gallon yesterday, how is that? Thanks for all your help, All tips are greatly appreciated!!

How do seedlings show sex?

I know pretty much everything there is to know about plant morphology and biology and I can't tell sex till the plant sexually matures or I force sex through 12/12 on my clones.

the fox farm trio of tiger bloom, big bloom and grow big always work well imo.. fairly cheap, an good results as well.

^-What he said, I use General Organics myself and have never been disapointed (and i'm prone to over ferting)

Oh sorry, I have 1 showing female, it's in veg about to flower, the rest are a few weeks younger, seedlings, about to be in veg.