com - MGP Pure - Growth Promoter for Mushrooms. Our Substrate Probiotic Increases Colonization Speed, Fruiting Size + Faster Flushes - (10 Grams)

DRMyc.com - MGP Pure - Growth Promoter for Mushrooms. Our Substrate Probiotic Increases Colonization Speed, Fruiting Size + Faster Flushes - (10 Grams)

DRMyc.com - MGP Plus - Growth Promoter for Mushroom Substrates. MGP Increases Colonization Speed, Yields, Fruit Size & Reduces Trich - Works with Rye Berries, Millet, Dung Loving Mushrooms (10 Grams)

DrMyc.com Magical Gypsum for Mushroom Substrates - Lab Grade Purity Gypsum with Organic Humic Acid, Biochar, Sucrose & MGP Microbes for Mushroom Growing (3.0 lbs)