I have a 55 gallon salt water tank setup with live rock and a few fish. I bought a skimmer online and it's one with a pump that hangs on the back of the tank and has the "tornado" effect in the tubes. It has only been set up a few days but I can't see if it's working or not. It doesn't even look like it produces any foam in the top of it. Please help!
Sent from my iPhone using Aquarium Advice