Hi, If the heater is too large it will cycle continuously and wear out quicker. The ideal heater would be on continually at a very low wattage replacing exactly as many BTUs as was being lost and never turning off. So a very small heater set to the target temperature you want and then a larger back up heater set a few degrees below the target temperature would be ideal. Take care, Mike Roberts ===================================== *DataWest Internet - www.datawest.net *Colorado Springs - 888-304-5988 -----Original Message----- From: owner-aga-member@thekrib.com [mailto:owner-aga-member@thekrib.com] On Behalf Of william ruyle Sent: Sunday, February 15, 2004 17:40 To: aga-member@thekrib.com Subject: RE: [AGA Member] Heater Excuse me, is my nose in the way?:-) Actually, the colder the climate and those who set their thermostats at a thrifty 65-68F in winter might want to use a beefier heater or two, in case one gives out. If I had an 150 gallon tank (lucky you Scott) I would definitely have some failsafe in place by using 2 heaters. Some recommend up to 10 watts a gallon in winter if the room is kept rather chilly. I think I would play overkill with the wattage, so the heater(s) wouldn't have to work so hard. Bill [..] ------------------ 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/