Umagooma

What is this rock wool I have been reading about and where can I find it? Plan to use it as a growing medium. Thanks for the help.

opt[i]c

Rockwool, is exactly what its name is, its rocks that are heated and then are spun into fibers producing a wool, from molten rock.
Generally you can find rockwool at plant nurseries, hydroponic stores, etc. Where i live rockwool is only used to start off seedlings, so describe its use if the clerk doesnt know what you are talking about.
Its used in hydroponics, and also many nurseries use it to start off clones and seedlings.