| Like most things in life, even your little tabletop fountains need a bit of maintenance and cleaning to function properly. Granted indoor fountains can go a pretty long time without needing any attention, which is of course one of the big advantages to having them in your office, but nevertheless eventually even they get cloudy water and white film coating things that just needs to be cleaned off in order to restore the fountain to its former glory.
One thing that anyone using tabletop fountains needs to keep in mind is to never use regular old tap water in the fountain if it can be avoided. You will not damage the fountain by using tap water, but if you use distilled water instead you will be able to let it go much longer without maintenance. Eventually, however, you will need to clean your fountain, and fortunately it is an easy process. First unplug the fountain and remove all of the stones. If you have a copper or brass bell make sure to polish it, and all other fountains should be able to be cleaned with soap and water or calcium lime remover (CLR). Next pop the pump out from the fountain and remove the back panel to expose the innards. Give everything in sight a good wipe down with a damp rag to remove any algae or calcium built up inside and replace the parts.
From here you simply need to put the stones back in, pour in some more distilled water, and plug the fountain back in. The whole process only takes two or three minutes, making it an extremely quick and easy maintenance chore that anyone could do in moments, no matter their knowledge of indoor fountains.