If you want to spend some cash then get a new skimmer. If the one you have works good then spend it on some new coral from one of the sponsors.. Don't replace what's already working okay. If you think you are overloading your tank with coral and fish and think the skimmer you have can't keep up with the bioload then, by all means, get a better one. Otherwise, keep what works and add to the beauty in the tank...