Pahroc Giant Perlite #4, 4 cu ft. Humidity Controllers These special properties improve both

These special properties improve both mineral and oxygen availability in the growing media

Funnel top opening makes for easy filling

Scientists take plant tissue samples to measure plant nutrient absorption

Dramm Corporation manufactures and distributes a complete line of professional greenhouse tools and equipment throughout the world

anti-transpirant plant conditioner that prevents the type of moisture loss that can result in leaf and shoot wilting

Pahroc Giant Perlite #4, 4 cu ft. Humidity Controllers These special properties improve bothPahroc #4 perlite 4 cubic foot bags contain 7 16 to 5 8 particles. This variety is excellent for use in hydroponic gardening systems. It is also a great option to use for amending rooftop gardening potting soil, orchid media or to create a drainage layer in potted plants.