PRO-MOSS BBK is a high-quality sphagnum peat moss substrate developed for growers who want to customize their growing medium. Its uniform particle size and consistent moisture-retention profile provides a stable base designed to be blended with other substrates like perlite, coir, or vermiculite — giving growers full control over aeration and drainage. It’s also good for propagation, transplanting, or use in automated grow systems that require consistent moisture distribution. With a clean, low-contaminant profile, it’s especially appealing for growers looking to avoid pests, pathogens, or chemical residues. It doesn’t contain any added nutrients or biological additives — meaning it’s ideal for growers looking for precision feeding and custom nutrient regimens. A finer peat moss option with enhanced water retention is PRO-MOSS TBK. If you’re looking for a peat-based blend with perlite for balanced porosity, PRO-MIX BK is a great ready-to-use option.