Yes, the clay provides a 'floculating' ability to the soil that makes it clump up and fall back to the substrate from the water column faster when you uproot plants. Strange thing, both soil and clay by themselves tend to stay in the water column a long time, but if mixed together they lump up and fall out.
Sad thing about 3M ColorQuartz, last I knew they had ceased manufacturing it.
Aquascape? I'm a crypt farmer.
It's a fine line between fishing and standing on the shore looking like an idiot.
That IS an aquascape, it's titled "The Vacant Lot".