Stop worrying so much. Invest in a 400 watt MH lamp and ballast. You still have several more weeks to go in Veg before flowering takes place. Miracle Gro is just fine, the only additional element needed is H2O, water from a flowering can ever other day with a count of 10. When in flowering, planted in a 1.5 gallon container the count is 45 for watering. Count off to yourself once the head starts pouring. End of.