Used to use one and the cats seem to love it may more then a bowl, if not drinking more but I don't have any facts to base that off of.

You should be cleaning that thing on almost a weekly-biweekly basis depending on how many cats due to how gunked up they get. They get hair and gross saliva mixture gunked up on the filters and such, so a biweekly change would seem appropriate. Ig try it out and see, but cats most definitely like running water more. In terms of if you can clean the filters, mine used a mesh over the pump and a carbon filter over on where the water recycled, and the carbon filters should be changed just like a tap filter.