There are several videos on the web about building your own. They get the leds off ebay and use clear tubing for fluoresce lights from Lowes. Much cheaper than the ready made ones. I have not tried either, but have been considering trying to make one. Looks like I can make a large one for about $20 to $25. They cost about $80 for same size. If you buy one, let us know what kind you get and how it does.