Hey Mark thanks for the reply. I'm familiar with the little clay balls/hydroton. I was wondering what the "dirt-like" stuff is. Was under the impression you shouldn't have any organic materials or soil near a DWC setup so just a bit confused what the purpose is.That would be "Hydroton" or "Clay pebbles" as they are more commonly known [emoji106]
Quite a common medium especially for DWC, RDWC and Dripper system's
A bit of info from our good friend "Google"
Clay pebbles or hydroton (sometimes referred to as LECA—light expandedclay aggregate) are a hydroponic substrate with units about the size of marbles or peanuts
Hope that helps my friend?
All the best
Mark..
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