As I was collecting what I did wrong for my grow so far, What latewood said is so understandable.. It's all coming back to me~

After you transplant, your new Miracle grow soil will provides enough nutrients during vegetative stage and Superthrive will help to grow roots. It might be better to wait until you put your plants into flowering and feed 1/4 strength of fertilizer and gradually change it to full strength.
Bad combo: (Transplanting + Feeding with full strength of fertilizer + Putting plants in flowering stage) at the same time.

I am using a Foxfarm tiger bloom product and it is a right product for flowering stage. GH is also on my trying-out list. When people are saying GH is good, It is good.. I would not think twice..

Don't use plant food.. I am feeding my pepper plant with this all purpose plant food but my weed. At the end, you will see the big difference..
I didn't see my big difference yet..
This is a noob opinion so please correct me..