What about GRODAN and the Environment?

You can grow crops in a re-circulating system and thus not drain any fertilizer into the ground.  percentage Used GRODAN is either repurposed into other products or made into new GRODAN stone wool. We do this by re-melted and then spin into new wool. Also, in a controlled hydroponic environment, pest and disease control can be effectively managed almost exclusively using biological controls instead of dangerous pesticides.