i have the same one. though not from SWF.com a friend had it so i bought it off him. i have no problems with i except for the size. i run mine on super low since i only have a 30 g tank. As far as the UV ster. i have never even plugged it in. i've heard that the UV can nuke valuable bacteria and what not. personally i would not buy this skimmer new. (got mine for 45$) i am in the process of moving into a 75 wide so i look forward to seeeing theresults in that tank. although i think the skimmer is rated to 125 G. HTH
j