Heater for 100-110 gallon?

[saradomin]

Would a Eheim Jager 250 work on an aquarium of this size? My house stays above 60F throughout the year.

[1998golfer]

I'd probably go with 2 heaters, 2x 200w heaters will probably work fine. 2x of the 250w eheim jagers would go good also.

[saradomin]

I was thinking of mounting a 300w horizontally in the center. What are your thoughts on this, aesthetically?

[Linwood]

Check the instructions, some heaters require a certain orientation, some do not.

If you want 78 degree water and your house goes down to 60, one 300 may be a bit light, at lot depends on the top and lights -- open vs. closed top (evaporative cooling), type of light and how long (e.g. florescents in a hood heat a lot more than LED's hung above).

The heat loss from conduction through the glass is directly proportional to the temperature difference. So a 78 degree tank in 74 degree room needs a quarter the heat (for conductive loss) as a 78 degree tank in a 62 degree room.

I agree with the comments above about 2 heaters, there's a lot to be said for that -- if one fails-cold you have at least some backup, and if one fails-hot, the smaller wattage will take a lot longer to kill your fish.

[saradomin]

Ok, so my 125 gallon that I'm going to acquire soon is around 23 inches in height. The Eheim heaters that I want are supposed to be mounted vertically.

Does any one have the actual dimensions for a 300w, 250w, and a 200w Eheim? I've have found varying numbers online.