hi doydie

i have a pond with a fountain inside my house. ( i'll try and post a picture tomorrow.)plus i have had a small table top like you have. regular water works fine.

the water will evaporate, so watch the level. if you let it sit not turned on, you might want to dump out any stangnant water and replace it.

a few times a year check the rubber hoose. if it is gunky, just rinse with bleach water.

i love the sound of the fountain. i hope you enjoy yours.