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Um can someone help me. The temperature of my water is always at 84. I keep taking 30% out of my 20g and putting cold water(also addingaqua plus which takes out chlorine from tap water)but it keeps going up to 84 again and again. What do i do?

If it's the heater that's broken, then buy a new one.

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I'm not your neighbor, you Bakersfield trash.

And if it's not broken, well mine goes a few degrees higher than what I set it on. Maybe turn it down a bit?

wouldnt the heater make temperature go up? Its the summer for me and it should be at 80 but it stays at 84. The heater is always off.

Its simple... don't add any cold water. Those temperature changes -sooner or later- cause damage to the fish. Just left the tank as it is, trying to left it uncovered to allow evaporation take some temperature away.

Evaporation is the safest way to go. If your tank doesn't evaporate much, then I'd left the tank as it is.

My fishes are currently at 84° and two of them are Goldfish, that are coldwater fish... Theres not much i can help!

Try a fan across the top of the tank?

Last edited by openwater at 10-Jun-2005 20:12

If it's the ambient room temperature that's making the tank too hot, there are a couple different things you could do that are good for lowering the tank temperature.

The first one is blowing a fan across the surface of the water, which creates the same affect as a human sweating. As the water evaporates, it takes a lot of the heat with it, lowering the temperature of the rest of the water.

The second method I've heard about is putting ice cubes in the back of the HOB filter. This is much more safe than putting ice cubes or a frozen water bottle directly into the tank. As the ice cubes melt over a period of time in the filter, they will cool the water in the tank slowly and evenly.

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I'm not your neighbor, you Bakersfield trash.

Blow a fan across the surface of the tank water. This is the easiest & most recommended solution to lower the water temperature.


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doesnt using air stones also help?

Is the tank near a window and picking up natural sunlight? maybe moving it to a different location may help?

What kind of fish do you have? I mean, 84 degrees really isn't THAT hot... at least, it's not hot enough to get really worked up over. Add some airstones maybe to increase O2. Otherwise, if the fish aren't showing signs of stress, you shouldn't either

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Back in the saddle!

my 3g tank is at 84...coz my room is hot. i just put the fan on to make the air around it to vent...if u dont have ac in ur room...then...thats the best u can do....u dont have to turn off the heater coz it has its own thermostat...

try to turn off the light for abt an hr or 2 during noontime to reduce heat coming from the light...and u may leave the lid open to expose the surface.

never put in new water that has a different temp than whats in the tank..this is not gud for the occupants..u may end up with ich outbreak.


Last edited by tankie at 13-Jun-2005 11:44

my 30 gal was at 88 deg F for last 3 months. 2 of my swordtails died but due to some other reason.

Last edited by bharatk at 14-Jun-2005 02:08

[font color="#800080"]84 really isn't all that high for tropical fish. The thing to keep in mind is that higher temperature means the water is able to retain less oxygen. If you're not injecting CO2 then increasing surface agitation will help.

A word of caution against ice cubes. Don't! Especially with that low of a temperature you're likely to cause more harm than good. Even adding them to the filter will create massivly cold spots. Additionally you will have to maintain the ice cubes by refreshing them as they melt (say every hour or two). Sudden drops in temperature are more likely to cause issues related to stress (ie ich) than having the tank at a temperature of 84. If the tank is not planted you can also leave the lights off or change the photoperiod by adding a siesta time to your timer.

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84 really isn't all that high for tropical fish

I think there is goldfish in the tank of question. Or I would I have to agree and say 84 really isn't that high for most tropical.