Heater Help!!!!

[Cibo]

I got a 40 gal tank and I was looking for a heater what is a good heater marineland has a 150 watt it just will may fit in the overflow box, I was thinking of getting a in line one
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=11369

has anyone used this one where is the best place for a heater my refugim will is made from a 10 gal so a 150 whts will be to big to put in there

I think I can get a 100 wtt would i need 2 of the for the refugiun?

thanks

 

[Cibo]

I'am thinking the in line one any one use this one???

 

[ZANYMASTER]

Get a Jaeger,To me,the best made ones.