Keeping water cool - The Planted Tank Forum
 
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post #1 of 13 (permalink) Old 04-24-2012, 02:56 PM Thread Starter
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Keeping water cool

How some of you guy that live in hot climates keep you water cool. I'm staying in a dorm where I can't control the temperature at all. I'm in Korea where is get very hot and humid and the only way to keep cool is to open the window. Are there cheap water chillers for a 15 gallon out there or something? I don't want to go through the time a effort of setting a tank if everything will be killed by the high temp.

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post #2 of 13 (permalink) Old 04-24-2012, 03:23 PM
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Dude same question... My tanks were hitting 88F the past two days and they're in the 78-80F now, with heaters off:/


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post #3 of 13 (permalink) Old 04-24-2012, 03:28 PM
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ice cubes made with water treated with declor. For a small tank 1- 2 cubes at a time floated in the tank. For large tanks, larger cubes or homemade ice "bergs"
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post #4 of 13 (permalink) Old 04-24-2012, 03:30 PM
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Instead of ice cubes, you could freeze water in water bottles or fish bags, float them in the tank to cool it off, that way the water doesn't mix with tank water.

I keep about 10 bottles in the freezer during winter and rotate through them, 2-3 at a time for my bigger tanks.


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post #5 of 13 (permalink) Old 04-24-2012, 03:34 PM
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Quote:
Originally Posted by IWANNAGOFAST View Post
Instead of ice cubes, you could freeze water in water bottles or fish bags, float them in the tank to cool it off, that way the water doesn't mix with tank water.

I keep about 10 bottles in the freezer during winter and rotate through them, 2-3 at a time for my bigger tanks.
+1

thats a great idea! I wish i had a bigger freezer. my tanks are running between 77 and 80. its only april we haven't even started to hit the mid 90's or the 100's yet.....summer will be a challenge, all of my tanks are against extrior walls...yay!
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post #6 of 13 (permalink) Old 04-24-2012, 03:45 PM
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A fan blowing over the water surface will keep the temperatures down (and increase evaporation - this is how this works).

Obviously try to minimize adding heat from equipment, mainly lights. Lift up the canopy to allow air exchange.

Ice cubes work well for temporary heat spikes. But if you have to keep the tank below ambient temperatures for a couple of months there will be issues.

Water changes with ice-cold water can help. Obviously very slowly so the incoming water mixes well with the tank water without forming cold areas. This is how I keep the temp down in my 250gal tank - the water change water goes through a chest freezer, sits there in a 5gal container and is cooled to ~40F via timer or temp controller. Brings down the tank temp about 1 degree (~2% daily w/c). Will perhaps not work as well in a tank that's 25x smaller...


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post #7 of 13 (permalink) Old 04-24-2012, 04:02 PM
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Quote:
Originally Posted by IWANNAGOFAST View Post
Instead of ice cubes, you could freeze water in water bottles or fish bags, float them in the tank to cool it off, that way the water doesn't mix with tank water.

I keep about 10 bottles in the freezer during winter and rotate through them, 2-3 at a time for my bigger tanks.
This is what I do for a day or two of 95 deg. plus weather. In my 40 gallon tank, one frozen 16 oz water bottle drops the temperature by about half of a degree, as I recall. I have eight ready to go in the freezer.
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post #8 of 13 (permalink) Old 04-24-2012, 06:40 PM
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Spend the $5. Buy a clip-on fan for smaller tanks (or a computer cooling fan). Or $10 for a big fan for larger tanks. It's worth it.


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post #9 of 13 (permalink) Old 04-24-2012, 10:13 PM
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1) Remove excess decor (heater, plants) in tank to reduce heat capacity of tank, making it easier to cool, more stuff = more heat to hold.

2) I''ve been thinking of having water from HOB flow along a metal channel/canal (aluminum?) with a small fan blowing across it, possibly with riparium plants in channel

3) A powerhead with emersed spraybar with fan blowing across.

4) Small portable room air conditioner, put tank on wheeled stand and refrigerate it in small room to conserve energy vs using a large room.

The only problem would be minimizing evaporation, and resulting hardening of water.
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post #10 of 13 (permalink) Old 04-24-2012, 10:49 PM
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no matter what method you choose.......things are pretty tense over there, be safe.


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post #11 of 13 (permalink) Old 04-24-2012, 11:02 PM Thread Starter
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I'll give the fan ideal a dhot it seems simple enough. where can I get a decent one from?

Yes it is getting tense over here with that rocket stunt last week

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post #12 of 13 (permalink) Old 04-24-2012, 11:53 PM
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You should be able to pick up a PC fan and power adapter to run it at any electronics market like Yongsan/whatever the equivalent is in Gunsan or near the air base.

My relatives tell me you can find clip-on fans at E-Mart and sometimes Lotte, if you have any of those near you.


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post #13 of 13 (permalink) Old 04-25-2012, 12:01 AM
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DIY Dorm freezer chiller..and cool a 6 pack.

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