HI - this is my first post. I have a 12g freshwater community tank with no real plants. I have an appropriate size air pump feeding a flexible bubble stick producing a "wall" of bubbles on the back wall. The tank has a number of (nice) fake plants and all of them are covered with little bubbles. The tank is about 3 weeks old (started with bio-spira) and the fish all seem happy and healthy and my multi-test dipstick always comes out just about perfect. Is there a potential problem here with too much aeration or is that impossible in a non-planted tank? Thanks so much!