Chillers in Calgary?

[Der_Iron_Chef]

Hey--just looking ahead to warmer months here in Calgary (I know, very wishful thinking at this point!), and new to the hobby, so just wondering: do any Calgarians require chillers for their systems in the summer months?

[TRIX]

I find it all comes down to what equipment your running. If you have MH, in sumb pump etc. Also how close your lights are to the water surface, Airflow in the canopy. My temps stay fine but I have a very basic set up.