A good lamp source is actually home depot. They sell 2ft. philips uv bulbs that output 4W of UV light for the 20W light. A couple of these would probably do. $20 CAD. http://www.lighting.philips.com/nam/product_database/special/displayspecial.php?id=39 Aaron -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu