no, is this your first grow? soil sweet spot is 6.5ph
you will need a ph and ppm pen:
http://www.amazon.com/Blue-Lab-PPM-Pen-Combo/dp/B008UFKMVO
for nutes i recommend GH floraduo A/B..that's all you need (plus it's cheap)..it truly has everything that the plant needs including sulphur which...