Pumice - 2.5L - Fine microbe Membrane type : Thin film

Membrane type : Thin film composite

If ingested

Grodan's sustainable rock wool starter cubes saturate easily

Specialized one part fertilizer for household plant gardening

It’s perfect for cloning a variety of plants in small areas

Pumice - 2.5L - Fine microbe Membrane type : Thin filmPackaging That Cares for the Planet! Now offered in eco friendly, recyclable packaging* that is made from 100% renewable energy. Pumice is a highly porous and durable naturally calcined volcanic glass foam that can provide optimum aeration, aid in water retention, and offer long lasting structure to your growing medium. Nothing but the best for your precious plants. Our pumice is free of heavy metals, pesticides, nanoparticles, and allergens, and is