Sure, for organic growing I like Age Old products, Earth Juice Rainbow Mix or Espoma Plant-Tone, or the General Organic (by General Hydroponic Co.) line of liquid or soluble fertilizers. Budswel and Super Tea are very good. The Neptune or Alaska fish / kelp liquids are good for veg cycle too. Just make sure to change your nutrients to bloom specific nutrients ( low nitrogen) once you start the flowering phase. If you're not dropping leaves by the 4th week of bloom cycle then you've overfed the nitrogen and the product taste and smell will suffer.
I used Plant-Tone and Age Old Bloom this grow and I'm pleased. I also use molasses, 1 Tbs to the gallon with the fertilizer and the schedule is water-water-feed. Check you water source pH with a reliable method. Bring it to a nursery, aquarium store or water well driller. If the water has a neutral pH of 7 you will probably be able to get by without fussing with pH correcting solutions. The nutrients and the Pro Mix will put the soil in a good pH range of 6.3-6.7.