Properties: Prevents Root Rot : Another result of increased oxygen levels and improved drainage is that aerobic (air breathing) bacteria populations remain strong which keep the disease causing anaerobic (non air breathing) bacteria at bay. Reduces watering requirements & water evaporation : By top dressing your pots and planters with a one to two inch layer of ECA evaporative losses are reduced which effectively conserves water and increases the time between watering. Blocks algae and fungus gnats : A top dressing of ECA also serves to block direct light from reaching the growing media which prevents problematic algae from growing on its surface. This 'dry' top dressing also deters fungus gnats from colonizing your containers with their root destroying larvae. Provides physical stability : When growing outdoors with a lightweight media such as coco pit etc., blending some ECA into the mix will give planters the extra weight they need to resist getting knocked over by wind, rain or small animals. Easy reuse : ECA can be kept for an unlimited time, without ever changing. Environment-friendly Non-combustible Natural insulation Vegetation in the roof can also help prevent UV rays Very light, yet holds moisture Applications: Gardening : Landscaping, Green Roofs, Flower beds, Flower Pots, Agriculture : Agriculture, Horticultures, Hydroponics. Note: Four usual gradations of Particle Size are 0-2 mm, 2-7 mm, 7-15mm, 15-30mm.