Heaters?

What does everyone use to heat their fishroom? Anything like this work? Any ideas welcome.

http://www.heatershop.com/garage_heater_gn30t.html

yea something like that will work, but just depends as to how big a room the fishroom is, how well its insulated, how high the ceilings are. The top tanks will be warmer than the bottom ones so you may still need to use heaters on the bottom tanks, they just wont come on as often.

whats the coldest the fishroom gets throughout the year will affect the need for individual heaters along with the room temperature.