Cleaning equipment help pls
So I have inherited 3 boxes of assorted tank stuff which has been sitting in a garage and basement for a few years from the looks of it and I am wondering the best way to clean it. Most of the filters - aquaclears & penguins - are covered in scale, while the heaters & airpumps look *gungy* for lack of a more technical term. I was going to start with just elbow grease but know it is going to take some kind of cleaner to get the worst of the crap off. The only thing that came immediately to mind as being fish safe was vinegar but what other options do I have.