I recently bought a 29 gal. bio cube tank . When I bought it the tank was up and running but they did not have the carbon filter in. I put one in and after a couple of days it gets a little dirty and kind of acts like a dam. Then the water gets to low where the pump is and when I take the filter out the water level is fine again. Is there any other way I can filter the water without using the carbon filter? I have live rock in the back instead of the bio balls. Could I get away with getting a protein skimmer and leaving the carbon filter out? Or do I have to just clean out the carbon filter every day?