PRO-MIX GTX is a premium growing mix with extra structure and durability. Featuring a blend of sphagnum peat moss, composted bark, and perlite that creates a well-balanced texture, it’s amazing for ideal drainage and long-term stability. The addition of composted bark increases porosity and reduces compaction over time — meaning it’s especially beneficial for large containers, longer crop cycles, or repeated irrigation in automated systems. Its moderate water-holding capacity and high aeration creates an ideal environment for the root zone, promoting robust growth from seedling to harvest. Made without any added fertilizer, it gives you complete control to customize your nutrient regimen throughout your grow. For growers interested in a more traditional peat-perlite blend with a coarser texture, PRO-MIX BK is a great choice. If you're looking for an organic-certified mix with a similar moisture balance, PRO-MIX FPO is another solid option to consider.