PLANT!T – Perlite 10L bag for soil / Hydroponics / Coco / Water Retention
PLANT!T Horticultural Perlite is a natural, pH neutral, sterile growing medium derived from volcanic rock and used by gardeners the world over. It can be used for propagation and to mix with potting soil, keeping it loose and light, allowing air and water to reach roots aiding nutrient uptake and general plant health and growth. Great in potting mixes for container growing and when used in general soil enrichment, it can break up heavy clay soils or support growing areas of the garden where wet ground is a problem. It should not be used in recirculating hydroponic systems as it can block drippers or pumps
Perlite is produced from a volcanic alumino-silicate rock, which is first crushed and then heated to a temperature slightly below 1000°C. At this temperature the water and gas (which is trapped) vaporises to expand the particles rather like popcorn, producing very light aerated white mineral foam. The rough external surface of the granules is mainly responsible for the considerable capillary attraction which perlite has for water. This makes perlite ideal for wick or pot systems provided a reservoir of nutrient solution is maintained at all times. Perlite is also commonly added to potting soil mixes. It does not rot or break down, and it helps soil retain moisture and provides aeration for the roots.