i wish that was all i needed, i added a little something for nitrogen during flowereing. it honestly did good by itself, but i would add a little more, because it didnt last as long as it should. worm castings are great in my book but it even needed a little phospherous towards the end of flowering. molasses are good too if you dont over do them. i had the guano and worm castings the first time, now i have fish juice too. im not sure what they will do. i would like a little potassium naturally, any suggestions?