Looking to add a Medium Aquafuge2 to my 22 gallon rimless reef tank. I have 4" clearance between my tank and wall. Specs say it's 4.5" wide. I assume that includes the hangers in the tank. Can someone who has one measure the width of the portion that hangs outside the tank and let me know if 4" clearance is sufficient. I've scoured the internet and called BRS customer service and can't find an answer. Thanks in advance! Tony