i used a divider that went 1 1'2" above the water & dirt,and then put a fairly thin layer of pea gravel over the dirt.ti have'nt tried moss yet,but the plexi should hold it back fine.
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1.1 cb spotted turtles (parker(f),stinky(m))
0.0.1 cb baby red cheek mud (pickles)
0.0.1 cb baby chiapas musk (chomper)
0.0.1 cb ally snapper (gamera)
1.0 cb homo sapien(kaelan,5)

"my name is inigo montoya...you killed my father.prepare to die."