Hi BluFin, Your understanding is pretty much spot on.Originally Posted by BluFin
Folks like the clay balls..as I understand for a few reasons...
One, they are very light in weight. The supports for the system don't have to be 'heavy duty'.
Two, it's very easy to remove the plants when done growing, or to re-locate...or I even heard of folks pulling the plants out to spray off bugs and then sticking them back in.
Third, normally, there are no issues with their effect on the water's PH.
On the negative side...
-They co$t a lot....
-When you have taller plants, the clay balls just don't support as well as river rocks.
If I remember, the company that made Hydroton....stopped production, because they couldn't find a good continuing source, of the type of clay that they wanted.
What type of clay...sorry...I don't know.