It’s lightweight, sterile, and easy to handle, and is used as a decorative fill and sometimes water retention in hydroponic planters like the HydroBio Silla Hydroponic Herb Garden. Available in 1 litre bags. As seen in the Silla Hydroponic Herb Garden
HydroBio Perlite
7.49 €
Perlite is a lightweight granular material. It is made from expanded volcanic glass, heated to 1000°C until it ‘pops’ to many times its original size.
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