PVP Industries PVP105408 120 Quarts – 4 Cubic Foot of Organic Perlite Planting Soil Additive Gi, WhiteBulk perlite for professional use – 120 quart – 4 cubic foot weighing 20 lb. Horticultural perlite is clean, sterile, pH neutral, non-flammable, odorless, nontoxic & neither decays nor shrinks – even pests such as insects & fungi can’t destroy it. When bulk perlite is mixed with organic compost, natural soils or composted bark, it helps anchor the roots of young plants so they grow stronger. While horticultural perlite does retain water & food for the growing plants, It is best used for drainage purposes. A good potting soil should contain at least 25% perlite for proper drainage. Horticultural perlite is a lightweight substitute for sand & is very useful in a hydroponic gardening systems. Additionally, it is perfect for seed germination & cutting propagation.PVP Medium Vermiculite – Professional Grade – Excellent Soil Conditioner - Medium Granule – 103 Quarts - 4 Cubic FootWe provide a wide assortment of garden and lawn products that are available in brilliant designs These pieces of products are made to provide you with utmost comfort during your leisure times Be it for personal or for professional use you will find the suitable for both the purposes Features. Vermiculite Medium Granule. Horticultural medium grade is brown in color. Density is 65 to 85 lb per cu ft. Used for plus mixes soilless mixes germination mixes or rooting mixes. Virtually eliminates damping off problems. Improves soil conditions and aeration. Use for storing bulbs or tulips.