The best place to find lights are at your local pet supply shop. make sure you get the lights for aquatic plants not fish or lizards. these lights work awesome and are pretty cheap. (i got mine for 9$ a bulb) and fit in any home socket. if you cant find any ask or call the people at petland or something and say you have a "Dutch Aquarium". (its a aquarium only used for plants.) they should be ableto help you out. Good Luck!