How do you decrease temperature to about 65-67 degrees without a chiller?

  • We are currently upgrading MFK. thanks! -neo
They will not lower the water temperature.Perhaps you have a cool basement that you could relocate the tank to?
 
What's the temp now/usually?
What's the size of your tank?
What are you running for lights?
 
I keep a lot of Uruguayan fish that need a cool-down period in the winter. Their tanks go on the bottom rack and floor of my fishroom...gets down to the upper 50s and low 60s...

I'd keep powerheads and other mechanical stuff out of a tank I was trying to cool. They produce heat.

Matt
 
Fan blowing on surface will lower it a bit. I do that in the summer for wifes 55 goldie tank, usually brings it from low 80's to mid 70's.

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The only way to get water to a specific temperature is to either remove heat or add heat. In your case you must remove the heat in order to decrease the temperature. Your options are to either keep the ambient temperature between 65-67 degrees (moving to basement might work or cooling the entire room), or to cool the water directly (i.e. use a chiller).
 
Fan blowing on surface will lower it a bit

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I don't think it will help that much since the fish he wants to keep needs cool temperatures. The room temperature gets up to 80F so pretty sure he needs a chiller or relocate the tank to the basement.
 
I could get another fan. It only gets to 80 degrees here during the summer for a week. Its usually at mid 60-mid70 degrees here. I do not have a basement. Also it is that the biome that i live in is a shapperal biome. its basically like the Mediterranean weather. Even though i Am literally about 3 miles away from the ocean, I still get that swing in temp. In winter it gets about 35 degrees here. I can also get a heater to set it at 65 so it does not get too cold. My house hase no air conditioner sadly. We can only heat the room.
 
Then trout are not for you then.
 
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