I've measured for this fixture and it appears to be compatible: [url=http://www.ebay.com/itm/20-T5-Aquarium-Light-HO-72W-Cichlid-Marine-Reef-LED-4-Lamps-18W-Odyssea-Nano-/290684874077?_trksid=p4340.m185&_trkparms=algo%3DSIC.NPJS%26its%3DI%252BC%26itu%3DUA%26otn%3D5%26pmod%3D110824083858%26ps%3D63%26clkid%3D7072406006976119033]20" T5 Aquarium Light HO 72W Cichlid Marine Reef LED 4 Lamps 18W Odyssea Nano | eBay[/url] Thoughts on this fixture?