I purchased the Euro Reef skimmer at the auction for $75. I didn't keep track of who donated it, and was aware it was repaired. I am new to this hobby and never owned a skimmer. I tried a test run but couldn't get much of any bubbles or the water to rise in the column. It looks to me like the pump is no good. Can anyone help me out here? I would hate to get rid of what I thought was going to be my first skimmer adventure I just need to know if I can easily tell if the pump is no good or not. Also it looks to be missing some of the return section pipes, do not know if this matters? Any help or contact with the individual who donated - to ask a few questions would be a lifesaver, thanks