The Seahorse tank is the wifes officially but I have never seen her get her hands wet or scrtch her head when things aren't happening but oh well!!!!! Yes LR would be fine as this is what they grip onto when looking for food......the only coral I have in mine is Bamboo Coral, a form of algae red in color very nice he likes to sit amongst this during the day and the rock at night............. like i said anything small and not to mad around the tank it will be fine just make sure the fish won't compete too much for food the and the little fellas starve.........moving onto feeding.......when you buy them make sure your LFS has had them in for a while so you can see they are healthy and ask about feeding .........if they are tank bred they should accept frozen if not you will have to feed live and slowly ween onto frozen by increasing the mix of live/frozen..good luck and enjoy.