If the room is 68F and you set the heater for 70F the electrical use is minimal if not negligable. Using powerhead type pumps also dispenses the waste heat into the tank. Other candidates for 68-70 degrees (I'd like to hear more): White Cloud Mountain Minnow Danios Weather Loach Bloodfin Tetras Corydoras Glass Perch Most Killifish Most Gouramis, Paradise Fish Some Barbs(?) Most Plecostomus-types Steev haika@drizzle.com wrote: > I have an unheated tank here at work with Endler's livebearers. Typically > the temp is pretty uniform...about 72. I have co-workers who have kept > honey gouramis, neon tetras, Amano shrimp, wild-type guppies and platies > in unheated tanks. The plants do fine as well, but we do mostly low-tech > non-C02 injected tanks and have mostly cheap stem plants, java moss and > java fern. > > Betty Goetz > > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member