http://www.ebay.com/itm/170752579436?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
i bought 2 of them made a offer for $15 each and they work fine
randy we should think of adding a second temp controller in case the chiller or the heaters fail to shut off on a tank that size its not a big deal just the stat
frank