Grow More 7512 Hawaiian Bud 5-50-17, 25-Pound Water soluble urea-free concentrate with humic acid for hydroponics. Specifically formulated for hydroponic production of cut flowers for the floral industry. Can be used in both fertigation and foliar applications. 0.5 lbs dissolved in 100 gallons of water yields approximately 150 ppm of Phosphate. General Foliar Dosage: 1 tsp/gallon. Fertigation: 1 tbsp/gallon/month.