I have done many many searches on websites before I ever got my Nano, and have spent a lot of time chatting with my LFS about Nanos. The first thing I have noticed and I did as well, was take out the ceramic and bioballs and replace them with 1.5-2lbs of live rock rubble. It has done wonders for my tank. I was told that the ceramic and bioballs will cause to many ammonia problems. Then, the stock pump may not be stong enough, again I'm not familiar with your particular tank but you may want to upgrade to a larger pump. Like maybe a MJ 600 or similar. I wouldn't go extreme with it though because you will end up blowing your tank away. What is the wattage of light you have? You can always upgrade lights later if you want to house more than softies.
