DIY Chiller?

I chill by myself all the time. lol.

was thinking about running the return hose through a hole in the side of a styrofoam cooler, through icewater, back out the other side, and into the tank. this would require you had a heater too, as to not overchill. I have an inline heater, so this might work for me in the summer months, but I only have a 20 gallon tank.
 
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