After reading and taking advice from everyone, I finally bought the xp2. I feel very dissapointed. My 20 gallon tank is cloudy and it's only the second day, and it makes a sligt humming noice, that's not too bothersome.
Also, it is not really doing a good job of filterig out small paricles because I see them floating on the surface. Maybe I was expecting too much and should just wait.
There were 4 filteration pads and a bag of activaed charcoal and I added ceramic rings, basically had to cram them all in. If anyone has had the same problem and if this is nothing to worry about, I would be glad.


