Sol Soils Pumice - 4 Quart Controllers Familiarize yourself with the safety

Familiarize yourself with the safety data sheet (SDS) provided by the manufacturer or supplier of pentane

an incredibly potent plant blooming source packed into a very small package

Features a user-selectable set-point

Made in high-grade stainless steel rust-proof body

Sol Soils Pumice - 4 Quart Controllers Familiarize yourself with the safetyPumice (filtered 3 8in to 1 4in in size) is relatively lightweight volcanic rock used as an amendment in all types of soil. Its porous composition allows it to retain moisture and nutrients during watering, and release them slowly over time as the root system requires. Think of these components as little batteries for your plants.