Best ways to cool a terrarium

What are the best and most inexpensive ways to cool a terrarium?

Start by reading:
http://www.caudata.org/cc/articles/cooling.shtml
but most of that is for aquariums, not terrariums. A screen lid will keep it a bit cooler. But you don't want to use a fan, as this will dry the substrate and the animal too much. Putting it in the coolest room in the house is a good starting point. You can use the bottle method (two plastic bottles of water, one in the freezer, one in the tank, and switch them back and forth). Be sure that the bottles won't flood the tank when they leak, as they always do leak eventually.

Some work with the forum search function will provide you with more information.

well im trying to cool it for fire salamanders.

If this is just a temporary problem then I would just pop them in the fridge until it cools down. However if its a more permanent problem then your best bet is to just crank down temperature on the air conditioner.

well from mid fall to mid spring it isn't a problem so soon it will be fine. It's just that im concerned about summer time.

In general, I rely on air-conditioning since I like the same temps as my newts, but I did have this concern when traveling with 3 red efts this summer; we were away from both home and air conditioning for nearly 6 weeks with no fridge room.

• I downsized their quarters from a 10 gal. tank to a large "critter keeper" (perhaps about 5 gals?) for convenience of travel,
• used mosses/plants which would tolerate very low light conditions,
• made sure there were plenty of hides, including some that went down into the substrate which would remain a bit cooler than the air, and
• made sure they were very well ventilated and in the shadiest/coolest area I could find.
• On the days when the terrarium thermometer went above 70 degrees F., I used the frozen bottle method advocated by Jennewt. This would bring the temps down several degrees, which was sufficient for my situation.

I found that method effective for short-term heat, though it did require fairly frequent maintenance of the bottles and wetting from the condensation was rather copious (think wet, rather than moist). Never had a leaking problem.

Car travel was the trickiest for me. The critter keeper fit very nicely inside a cooler, and with a number of small icepacks/frozen bottles, I was able to keep the temp in the cooler--even in the blazing sun--down in the 50s for all of our 5-6 hour roadtime, with no change of icepacks. Because of the sun, I covered the cooler with a sleeping bag for added insulation. The efts were happier than the humans since the car ac wasn't working!

I should think the latter method would work for extremely hot days and heat waves in the absence of air-conditioning and if you have no fridge room (or if the family balks at critters in the fridge). It also has the advantage of holding the cold longer than just a bottle in the tank, so would be good for someone who cannot frequently change frozen bottles around during the day (working, etc.). Obviously you need to ventilate the critters once in a while and change ice. Lack of light is also not great for the plantings. Condensation builds here, too, so watching for wet conditions is essential.

All that said, dorm fridges are on sale in many places now that the college kids are moving in--a dedicated fridge would be amazing--and from what I've seen, these are much cheaper than the wine coolers a number of folk advocate.

Advance planning is a good thing.

DDiS

Thanks for the info.