Cooling Fans

A few of us use fans in the summer. They'll drop the temperature a few degrees. But they also increase evaporation, and you have to top off the water on a regular basis
 
I use fans on my tanks.
I have home made custom ones - be sure to get them checked if you try it yourself. My grandfather is an electrician, he checks all my work.

Anyway, I converted a large computer fan to run via an adapter to the mains. I then use tough nylon to fix it into position (only because I have it as a temporary measure) but you might like to silicone yours into place.

This seems to drop the temperature by about 2C, which works well for my newts.
Remember, electricity and water don't mix, so get your work checked properly.
Best be safe than sorry.

You can get professional ones that work by Peltier effect, but they can be VERY expensive. They do work well however.
 
Fans can be suprisingly effective, especially if you have dry air. Remember to use distilled water if you have to "top off" the tank very often. Otherwise, the normal minerals and salts in your water will build up over time.
 
Reverse Osmosis water does have the drawback of having its natural trace elements ripped out - however, if you're topping up from evaporation, this is a GOOD thing.

Have you seen round the top of the waterline, especially in hardwater areas, that white line builds up?

The point being: when water evaporates, it's JUST the water that evaporates. All the minerals, salts and chemicals stay behind.

That's like heating a pan of custard - it gets thicker the longer you heat it, doesn't it?

Adding RO/Distilled water "thins" the "custard" (tankwater) back out again, making sure it stays safe, as Jennewt says.
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I also use the fans before and it helps to cool down the temp for 2 to 3c...not a great different, but better than nothing, I could say!
 
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