New 14 Gallon Biocube Problems...HELP!

Jun 2, 2009
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#1
I just bought a 14 gallon oceanic biocube saltwater tank today and set it up, but for some reason I can't get the water level in the tank's back left filter area to fall in the range between the "minimum" and "maximum" readings on the biocube's wall. I followed the directions and the tank itself is filled to the waterline indicated in the direction pamphlet, yet the water level in the back left compartment of the tank will not rise. Is this a common occurrence? What's the problem? And how can I fix it?