Hey, nice setup! Is that an Eclipse Six? I'm running an Eclipse Six nano-reef and it is doing very well. I do one gallon water changes with store-bought water once a week and that is about it. I have never had a single problem with it.
A couple things I did was to take the bio-wheel out and run it Berlin style. One option is to buy a small Lee's Protein Skimmer because it sits inside of the tank. I have too much live rock to run the one I bought though.
Have at least 2 small PHs running. It's better than one big one.
Good luck with your nano-reef. They are fun and relatively cheap.
Jimmy