Hydroponic Vermiculite | What To Look For When Buying: Hydroponic - mylittlegarden.net - 28.02.2017 | How to use vermiculite - gardening & hydroponics HTGSUPPLY presents ASK THE DOC: Vermiculite! In this Video, the Doc explains to you the benefits and best uses for Vermiculite; as well as the difference between Vermiculite and Perlite. Horticultural grade ...