It is not the sound of the water so much as it is that I want to be able to relax in front of my aquariums which I find hard to do if the sound of water is obtrusive. A little water running is not a problem but when it gets to the point that it is annoying then it is time to fix the problem. Easy fix. Just fill it up. Besides,I listen to the sound of rushing water all day long at work from the ponds. At home it is time for peace and quiet.
Marinemom