10 gallon vertical dartfrog terrarium construction

[optimum]

clever mod!

[nagol]

Hey all,
Planning on doing my first build with GS foam soon and was wondering how soil/coco husk siliconed to GS foam stand up over time in high humidity/wet environments? My concern is with it going bad, rotting, etc, but have not read anything to confirm or deny that.
Thanks,
-ry