A ready-blended 50/50 mix of oak hardwood and soya hull pellets, combining structure and nutrition in one bag. This is our most popular bulk substrate additive - the hardwood pellets provide bulk and aeration while the soya hulls add the nutrition needed for strong, consistent yields.
 
Simply hydrate and mix into your bulk substrate, or use as a standalone supplemented substrate for grain spawn.
 
Available in 1kg, 5kg, 10kg and 25kg bags.