No problem, the key to a SW tank is making sure it cycles and keeping a very strict cleaning regiment. That is about it. At least from my experience. If all you have is some live rock and a crab, you might be fine with doing a water change every 2 weeks. But you really have to set the system up to really get a hold of what it needs.
Good luck and please provide pics when you can!!!!
Good luck and please provide pics when you can!!!!