With my limited knowledge, very happy. Used about 50% of recommendation from Cannas Grow Guide. Used Canna PK 13-14 after week one of flowering until week before start of flushing. Only other nutrient used was Advanced Nutrients Sensi CalMag Xtra. This was mostly used to buffer Coco Coir, by doing this I never really had any CalMag issues. Did buy Cannacure, ended up using it occasionally on seedlings. Don't have much issues with insect's so it was an expense less. pH down was used at feeding time, will start to dilute it in water first before use.