The idea I have forming here is to add substrate (I am using natural 1/8″ – 1/4″ mixed gravel) so it is deeper, say 2-1/2″ – 3″ or so (I have about 1-1/2″ – 2″ right now) and buy or make some small plastic dishes, say 3″ – 4″ in diameter, maybe 2″ deep for each plant and “plant” each plant in an aquatic soil (need to figure out what that means, as well) in one of these Petri-dish sort of things. However, this would seem to restrict me to plants whose root systems are clustered, and would seem to mean I would have to fo
