Hello.

I have just set up a 1 gallon tank that I bought for my daughters, and was going to buy a Hydor mini aquarium heater (submersible) at the local Petco, but the packaging said it was for 2 to 5 gallon tanks. So I asked the salesperson why I couldn't use it in a 1 gallon tank. He told me that it would be too hot. I said "Well doesn't it have a thermostat? Wouldn't it just be on less frequently?" And the guy kind of shrugged his shoulders and said no, it would make the tank too hot.

I cannot see why this heater would not work in a 1 gallon tank, but clearly the manufacturer wants the lower limit to be 2 gallons.

Can someone enlighten me here and/or recommend a heater that is appropriate for such a tiny tank?

Thank you in advance!

TRoutMac