I've found it much cheaper to heat or chill (especially chill) the aquaria than than the house or even the room. The amount of heat transfer through the ceiling and walls is considerable even with unsulated walls and R49 insulation in the attic! In fact, depending on the weather, just a couple degrees difference in house temperature can dramatically affect the monthly energy bill (several dollars per day), while changes to the aquaria have much smaller effects. I suppose there is a point where, there is enough volume of aquaria in a room, that controlling the temp of the room is more economical. I haven't actually sat down and computed the heat transfer/replacement costs for fishroom vs aquaria, so I have no idea where that point is. In my case, for "room" heating/chilling to work, I'd need to install two sets of doors in the ground floor fish room, and put up some walls and doors in the basement, all of which I've been meaning to do for about five years or so. I suppose I could say the delay is largely due to having children but I don't want Erik and Kathy to find out too much too soon ;-) sh ---William ruyle <inquartata@comcast.net> wrote: > One way around this whole thing is to eschew (sorry, > sneezed) > using tank heaters at all: simply saunter over to the > wall > thermostat and crank it up to the target temp: that's > ummm, > 80-82F for guppy fanciers, etc? Family members who object > to > this higher temp--you will want to install spot-cooling > where > they congregate/sit in the room much like they do in > engineering > spaces aboard ships and on commercial airlines. > Gorgeously expensive > to implement and forget about low utility bills, but > highly effective. > And wouldn't it be nice to not have to worry about hiding > those > unsightly heaters and powerlines? HTH and Your Mileage > May Definitely > Vary:-) > Bill > > Thankful I keep killies where room temps are just fine. ===== S. Hieber - - - - - - - - Amano Returns to the AGA Annual Convention Nov 2004 -- Baltimore __________________________________ Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. http://antispam.yahoo.com/tools ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe aga-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/aga-member/