Have had good results with this....Amazon.com: Dyna-Gro Foliage Pro (9-3-6) 8 Fl. Oz.: Patio, Lawn & Garden Uncle Ben's Gardening Tweeks and Pointers
What works best for me is a homemade wormcastings & molasses tea + Roots Organic soil. Foxfarm works well too, if you mix the right amount of lime into your soil then you won't have to check ph all the time. Kept mine at 6.4-6.6 from day one to harvest. Still have to flush out excess salts though.