Raw b-vitamin is a soluble plant supplement that is used for horticultural purposes. Raw b-vitamin contains 1% vitamin b1. This product contains the highest concentration of fully water soluble vitamin b1 available to the home gardener. Raw b-vitamin can be used at all stages of growth and flowering. A 2 oz. package of raw b-vitamin makes up to 200 gallons, an 8 oz. package makes up to 800 gallons and a 2 lb. package makes up to 3200 gallons.