i know its not diy but i got one off ebya and it shoud be here today or tommrow here it is http://cgi.ebay.com/Coral-Reef-Magnetic-Invisible-Frag-Rack-X-Large-/150397746547?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item2304677d73
i have a new 75 gallon acrylic tank only has no scratchs it is up in the storage abouve my garage so if you want to come and see it i will dig it out.... i will also take part trade on some corals or maybe some reef safe fish
i got the big texas and the probe that heats the pellets in the little can broke and i called the local traeger store and they shipped it to me for free