what is rock wool made of

What is Rockwool made of, and how does it differ from Gelponics?

Gelponics products are a more environmentally friendly replacement for Rockwool, which tends to have a high carbon footprint and is non-biodegradable. But what is Rockwool made of, and how does Gelponics differ? What is rockwool made of? Rockwool is a lightweight hydroponic substrate made from molten basaltic rock spun into fine fibres. These fine fibres …

What is Rockwool made of, and how does it differ from Gelponics? Read More »