Pre-growth is very common! If you see an Oyster mushroom inside the box when you first get it, don’t panic! Simply remove the growth and continue at Step 1. 

Always use the provided humidity tent to maintain a humid environment. It’s recommended to purchase a humidity reader to ensure your block is getting the right amount of humidity

If at any point the block seems really dry, soak it in a large pot of cold tap water overnight to rehydrate it. Do not exceed 8 hours soaking.

Do NOT put the block inside of an enclosure that will restrict fresh air. Oyster mushrooms require a fair amount of fresh air exchange to develop large caps. Limiting fresh air will cause long stems and small caps.