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Old 05-17-2006, 11:46 PM   #1
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Do DIY chillers work?

I've read some articles on DIY chillers. Some say to coil tubing into a mini-fridge and that will lower your water temp effectively. Other articles say that a mini-fridge won't work and to use an air conditioner to cool the tubing instead.

I have a 90 gallon discus tank with 260w PC lighting on for about 10 hours a day. I usually keep the tank at around 84 degrees. On hot days, the temp can easily reach around 88-90 degrees. My fish don't seem to mind it, but it really messes up my plants.

What do you suggest I do?
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Old 05-18-2006, 12:58 AM   #2
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discus like it hot, maybe you can put a fan pointing at your lights to dissapate some heat away from the tank. you could turn down the heater on hot days and let convection heat the tank. you can raise the lights above the tank to allow some air flow to remove some of the heat thats about the only cheap free thing I can think of that might help you since I know nothing of chillers. Fans do work and should help some.
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Old 05-18-2006, 01:01 AM   #3
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I don't really know anything about chillers, but I read a DYI about making one out of a mini-fridge. If I had the time, money and proper tools I'd give it a whirl. In theory it seems like it would work.

That and I would feel quite the sense of accomplishment reaching into my inexpensive chiller to crack open the celebratory cold brew.
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Old 05-18-2006, 12:34 PM   #4
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The heat load is too high for a mini fridge, honestly if it ever worked for anyone it didnt work very long.
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Old 05-18-2006, 01:33 PM   #5
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Wouldn't it depend on how much of a coil you have going through the mini-fridge compared to the size of the tank, maybe it might work for a smaller tank....? Of course, that is not really the question, but I'm just curious....
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Old 05-18-2006, 01:39 PM   #6
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How would you regulate the temp?
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Old 05-18-2006, 01:52 PM   #7
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On a min-fridge? Don't they have a temp dial? If not, I suppose I would put less/more coil in the fridge....My grandfather heats his pool, with a hose under a black/dark covering, that sits above the pool, so the sunlight will heat up the water in the hoses...It kind of works, but it is a big pool.
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Old 05-18-2006, 02:52 PM   #8
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I mean yea they have a dial with like 1-10 on it, but with aquariums i dont think it would be reliable enough.
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Old 05-18-2006, 03:41 PM   #9
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Quote:
i dont think it would be reliable enough.
Agreed. LOL! Are you just following me around posting?!?! LOL!!
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Old 05-18-2006, 10:46 PM   #10
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I thought that I would try out heat dissipation with a large fan pointing at the water surface of my tank and......SUCCESS!!!! My tank was held at a constant 84 degrees all day.
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