MH and Heat - turning my tank into soup cooking pot?

[andsoitgoes]

Okay - Halides are very nice. They're also very hot. I expected some hot, but I didn't expect to turn my bedroom into a bloomin' rainforest.

So here I sit - my bedroom hot and my poor tank approaching 82 IN THE MIDDLE OF WINTER. It's cold as a witch you know what outside, and I've got our bedroom window open and the fan going - it still sticks at 82.

Now - I know there are a few options out there, and I put a small CDN tire fan blowing across the top of the tank. This helped, however it's JANUARY and when it actually starts getting warm out, I'm concerned as to what is going to happen.

Obviously the easiest answer would be a chiller. The concern there is obviously the cost of around 450 - a worthy investment but hard to justify with a 50g tank.

Other options are installing fans in the system - but will this be enough in my poorly insulated room? I don't want to get into June and be scrambling and dumping ice into my tanks if I can at all avoid it

I know come summer limiting the lighting time will assist in the overall temp - but what other options are there - cost effective and possibly tried and tested? I'm putting a kaibosh on the mini-fridge idea

Thanks much!