250w metal halide on a 29g

[FishyFishy!]

I have never had a chiller on smaller tanks with halides, and have never had temperature issues at all. It all depends on your house temp. If it fluctuates a lot and gets super hot in the summer time, you will have problems for sure.

My house luckily stays constant enough to avoid any temp swings.

Originally Posted by canadianbudz604

If I blow a big Fan across the water and the mh is 10 inches above the tank u think ill still need a chiller? If I need a chiller there goes that idea

That would work fine. But house temp will make a big difference. I know you guys in BC get pretty darn hot out there.