Do they actually ever use a water source?.
Your tank is very nice as is. If a few crickets drowning here and there is no big deal I would leave it .
But if you want to change it a bit you could do something like http://www.monsterfishkeepers.com/forums/showthread.php?t=266643&page=5
Which looks very nice. I think she uses a plastic bin but better ask as not sure. Again as is it looks nice.
Your tank is very nice as is. If a few crickets drowning here and there is no big deal I would leave it .
But if you want to change it a bit you could do something like http://www.monsterfishkeepers.com/forums/showthread.php?t=266643&page=5
Which looks very nice. I think she uses a plastic bin but better ask as not sure. Again as is it looks nice.