$50.00 inc. GST
VERMICULITE 100 LITRE BAG OF GRADE 3 HYDROPONIC GROWING MEDIUM 100L
Vermiculite is a hydrous phyllosilicate mineral which undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and commercial furnaces can routinely produce this effect. Vermiculite forms by the weathering or hydrothermal alteration of biotite or phlogopite.