Grain Refill Kit (For 25-35 Liter Tubs)

Wanting to create your own grain spawn to go with your monotub? We've got you covered with this grain spawn kit designed specifically for your 25-35 liter monotub.  There's enough grain and gypsum in this kit to create up to 720 grams of grain spawn.  Included in the kit: 360 grams of our organic, non-GMO rye grain berries 18 grams of pelletized gypsum Not sure if this is the correct amount of grain for your tub? Have no fear, check out the monotub calculator here.