It might be a good idea to amend your soil with some perlite and dolomite lime. I used the FF trio these season with very good results. I didn't use their feeding schedule. I had to adjust it to my grow. I also experimented a little with the FF solubles- Open Sesame, Beastie Bloomz, and Chaching, but if your not confident in your growing knowledge I'd advise you to skip these. They are pretty hot and can easily burn your plants if you don't know what your doing. Also with FF nutes start off feeding at 1/4 to 1/2 strength, then build up slowly. You'll also need much more Big Bloom than the others. Good luck.