I found this on e-bay, its a nice cheap red LED flashlight to check out your tank after the light go out.
http://cgi.ebay.com/THE-ASTRONOMERS-FLASHLIGHT-4-RED-LED-LIGHTS_W0QQitemZ250191378316QQihZ015QQcategoryZ29954QQrdZ1QQssPageNameZWD1VQQcmdZViewItem?_trksid=p1638.m118
http://cgi.ebay.com/THE-ASTRONOMERS-FLASHLIGHT-4-RED-LED-LIGHTS_W0QQitemZ250191378316QQihZ015QQcategoryZ29954QQrdZ1QQssPageNameZWD1VQQcmdZViewItem?_trksid=p1638.m118