I'm sure you're already thinking about it, but, for your next grow, have your nutes already lined up. It will make it easier to pinpoint problems. I still use the Fox Farm nutrient trio myself. Only one of the three parts are organic. I also use their Ocean Forest soil. There are normally 2 parts to a flowering ferterlizer. One contains the base elements required, the other contains the trace elements, a bloom booster basically. I also use a bud hardner towards the end of flower. It hardens em up a bit making them more dense. There are many many factors when doing a completely organic grow. You are essentially replicating a completely natural environment indoors. If you want to do the organic thing, I recommend taking a look at the Earth Juice line of nutrients and additives, they are comparatively inexpensive, and make good stuff if used properly. If you want to go with ease of use, I would recommend either Fox Farms Trio, or General Hydroponics 3 part. Both not organic, but very beginner friendly, and very widely used, great results. If you do an adequate flush at the end of flowering, you should not taste any feterlizer even using non organic ferts. I use Clearex solution at the end of flower, it's a flushing solution, aids in getting rid everything. I also use the Clearex during regular flushing as well, helps break up the salts.