Miracle-Gro will work fine if used as directed. I use the houseplant rate ( 1 tsp/gal) for the first watering at flowering then 1/2 that until flushing 2 weeks before harvest. You don't have to pay the ripoff prices for the designer fertilizers, a molecule of Nitrogen is the same in it's elemental form whether it comes from Monsanto or bat guano. The MG ferts are 15 to 30 times stronger than the designer counterparts so close attention to feeding directions are important. Flush for two weeks before flowering with plain water and there will be no chemical taste.
Any complete and balanced fertilizer with micro elements will grow good plants. No need to buy a bunch of expensive additives if you give the plant it's required elements. Pay no attention to the weed killer idea, this is just not true. There is no weed killer in MG, only NPK Boron copper iron and manganese