When you have a big tank, even little problems require BIG tools! It cost me $20 to fix a nagging leak. I would have purchased a larger wrench, but couldn't find one. (If you know of a better place than KMS, let me know)
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400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies
My Tank:
http://www.canreef.com/vbulletin/showthread.php?t=28436