newb here, just built 2 terrariums for some neps, darlingtonias, rubras, drosera, and flytraps. Went in head first, without enough research. Didn't leave them in pots,(I know, I know) have about 2 inches of gravel at bottom and then about 3-4 inches of sphagnum moss. What I'm wondering is how much water is enough or too much? Should there be water at the bottom in the gravel for roots to reach? any input would be much appreciated.