2 150w Heaters

[-SPB-]

I've got a 4ft tank (120h x 70.5h x 40.5w cm ). I've currently got a 300w heater in it. Do you think having 2 150w heaters at either end would be better. I think it would but just want a second opinion. It's just that i've just been given a 3ft tank for free with all the equiptment and it came with 2 150w heaters. I was gonna swap the 300w from my big tank.

 

[Bloo]

Definitely better. Heat more even distributed and if one fails, it's not as much of a potential trainsmash.
Put one in each side of the tank.