Hi everyone. I just joined this site today. I recently got my first aquarium, a 20g hexagon on Feb 21st, 8 days ago. The tank is about 18 inches high. It came with an Aquaclear 20 filter. The inlet tube on it is only about 6 inches. I am wondering if it is long enough for such a high tank. I can see very fine particles in the water which give the water a slightly cloudy appearance. I also wonder if they are too fine to be picked up by the filter. Does anyone know or would they reccomend a different filter for me? As far as fish go I only have 2 mollies in the tank right now so there shouldn't be too great of a load on the filter I wouldn't think. Thanks for any advice.