Has anyone ever made a short term chiller like this? It's really just an Igloo cooler with a fish pump in it. If you use cooler packs instead of ice, I bet you could drop a tank's temp by ten degrees in a hurry. If anything it might drop the temp too quickly. Ice pack "management" could solve that though.
I coulda used one last year - struggling to keep temps down right now as well.
My friend made a DIY chiller of the same design with a large circular beverage cooler. Wound the tubing all the way around the interior walls, with fittings for the intake, powerhead tube back to the tank, etc. He would fill it with ice and could cool the temperature for a 180 gallon tank about two or three degrees in about 20 minutes. As I recall, it was a google search for DIY chillers that gave us the idea.
Great idea, for a "tough times" chiller, I had considered doing something similar or going all the way to a coil in mini-fridge, with a pump hooked to a controller. But I have such high cooling needs that I bought a 1/4hp JBJ chiller just so I didn't have a constant job or a PITA project. If you need chilling very often I bet you would spend more on ice or nearly the same on re-cooling chill packs. I just run my return through the chiller, I figured no reason to add another pump, and it's heat/electrical consumption.
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