PRO-MIX HPCC BIOFUNGICIDE + MYCORRHIZAE HPCC MYCORRHIZAE – high porosity, chunk coir When seeking the ideal balance between air porosity, drainage capacity and water retention, PRO-MIX HPCC is the solution growers select. With unique chunk coir reducing soil compaction and carefully selected peat moss, this formulation provides qualities promoting growth and offering a delicate, well-calculated control over the root zone. PRO-MIX HPCC provides growers what they need to optimize the quality of their hanging baskets, large containers and long-term crops.