if you need any questions answered give me a pm.... if you want to keep a nz temperate marine tank good thing is you don't need expensive ligting, bad thing is you need expensive chilling. a 1/4 hp chiller would set you back $300-$800 depending on new or secondhand and where you go. the fish i would reccomend are yellow morays (if you can ge them!!!), sprats or an octupus. another idea is a tidal pool tank containing kina, sea anemones, crays, starfish, crabs, or small fish.