to eaches own i guess. i was a saltwater guy who turned freshwater because i was sick of corrosive parts and spending a fortune on the tank alone.
lucky we live hawaii though, fish and eels are free .
If you go to kaneohe peer you can quicky scoop up some barracuda fry if you want a predator setup. i used to do that all the time. release them when they are about a foot. my dad got me started on that. always caught our own starfish, eels, and feather dusters when it wasn't illegal to collect live rock.
oh and about the 5bar general. is it near the red devils?? cause i google mapped for rivers near botanical gardens and all i saw was the shallow canal that runs across sunpress and king windward nissan. where are they?