Description Procision Advantage creates ideal growing conditions for your plants. The high perlite content and peat moss increase air porosity and lower water retention, encouraging the leaching of fertilizer salts during the crop cycle. This can reduce water-related problems, including root disease, algae and fungus gnats. This mix can be used out of the bag or as part of a customized blend. When using Procision Advantage, water more frequently than you would with a general purpose peat-based mix.