Shoving tank temperatures down sans chiller - The Planted Tank Forum
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post #1 of 5 (permalink) Old 02-02-2017, 06:26 PM Thread Starter
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Shoving tank temperatures down sans chiller

Hello all! This spring I am considering getting a container pond and the magnificent Macropodus ocellatus to inhabit it for the 'warmer' months (otherwise known as 'the time that the water will stay liquid'). During the winter I am pulling them indoors...which is why I am writing this post. M. ocellatus needs a wintering period in the low 50's or lower for a couple months, and I'm not sure whether their soujourn outdoors (which is unlikely to last past November or before April...I'm in zone 5) would give a sufficient cooling period, so I am looking for ways to push a tank in a room in the low 60's another 5-10 degrees cooler. Any suggestions? Evaporative cooling seems the most effective at this point, but I am looking for other ideas to supplement this or specifics on how to use evaporative cooling. Thankx!
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post #2 of 5 (permalink) Old 02-02-2017, 07:38 PM
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Maybe the small beer fridge DIY method? Or old water cooler DIY?


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post #3 of 5 (permalink) Old 02-02-2017, 07:41 PM
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If you had a small coil of tubing inside in the water and a small coil outside in the cold, and pumped glycol or some sort of antifreeze through it, you'd be able to cool it down easily. With a small pump, some tubing, a reservoir and an Inkbird temp control I think you could put together a fairly low cost wintertime chiller. I think it would be a fairly easy project for me, but I'm an A/C and heat contractor so maybe my DIY veiwpoint is skewed.
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post #4 of 5 (permalink) Old 02-02-2017, 08:29 PM
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How's the shopping on Craigslist in your area? I find I can pick up "broken" wine coolers off the free section and strip down the Peltier coolers which are often not the broken part. Hung in the box off an old HOB filter, they can push quite a lot of cooling.
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post #5 of 5 (permalink) Old 02-02-2017, 08:30 PM
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Do you have a garage? The temperature is usually in the 40-50's there in the winter.

Otherwise you can use a peltier chiller
DIY Aquarium Chiller

You can find a kit on ebay

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