Dry Fire Blocks - Set of 3

These are the best grow blocks on the market. We use a secret blend of sawdust, soybean hull, gypsum and love! Set of 3 dry grow blocks. If properly sterilized and inoculated these blocks will typically yield over 12+ lbs of mushrooms! These blocks are contamination resistant with the proper skills! Each block is equipped with its very own high-grade micron filter and is easy to seal with the included plastic zip ties. ***Purchasers must have a pressure cooker able to fit one approximately 6-inch by 5-inch by 4-inch block. Most pressure cookers should do the trick and can be found at your local big blue box store. It is possible to simply add one gallon of boiling water however the product is much more likely to contaminate.*** Instructions: Add 1 gallon (3.8 liters) of clean water to each block Fold and tape the bag with the patch protected as depicted in the product photos (the block comes pre-folded in the correct manner). Pressure cook each block for 2 hours at 250 PSI. (If your