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would anybody know if they make battery operated heaters for fish aquariums2007-11-24 23:44:33

I notice someone suggested a UPS (uninterruptable power supply). We have one for our computers, and it cost us around $150 for it. This would definitely not last you two days without power to power the heaters.

Just make sure you have battery-powered aerators (http://www.drsfostersmith.com carries a nice selection of them) to aerate the water, as that's going to be your major concern.

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I have yet to see one. The issue is that converting electricity to heat, especially one for a large tank of moving water, takes a lot of power.

I have a similar problem. I have a 120 gallon planted tank and power outages. A few years ago we had a bad ice storm and I lost everything because I didn't pre-think.

Once I got my tank back up and running I got some single ply ply wood, some rock wool insulation, small thin piano hinges and clear plastic. I cut the ply wood so it was 1 in wider and 1/2 an inch taller then my setup tank (lights, filter, and cover on), I then cut a section big enough to cover the whole thing. I then lined all 5 pieces with rock wool (top I gave two layers to) a then the clear plastic. Then using the piano hinges on the four corners of the sides I made an easily stored collapsible box.

When ever the power goes out on a cold night I immediately put the box on and trap in the heat. if my tank drops to much (which it hasn't) I've got 2 good size rocks I could heat near a fire and place in my tank to warm it back up.

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I've seen battery operated air stones, but not heaters. They draw far too many watts to be effectively run off of your regular Alkaline batteries.