Hoping to get a terrarium....

[Kurt]

Do not put a heat matt under or on the side of the water section! You risk thermal cracking immediately followed by a possible electrical fire!
To heat the water use a submerisable aquarium heater. Unplug the heater when doing water changes, let it cool before replacing water, and then wait five minutes or so before pluging it back in. To do otherwise you risk thermal cracking immediately followed by a possible electrical fire!

[Tom Highum]

Yeah what Kurt said.

[spooky]

Thanks for the warning!!! This is one of the many reasons I love this forum! You guys potentially saved my life
Okie dokie, I do have an aquarium water heater so I'll use that instead!

[Kerry1968]

I have a small heat mat on the outside of the tank above the water level, with water dripping down on one part of the mat (the water dripping on the inside of the tank obviously!) Do you think this could still be a problem Kurt? It's keeping the water at about 19 degrees.

Got guppies in the water now!

[Kurt]

Possibly. I would feel safer if the pad was on the drier part of the tank.

[Kerry1968]

Thanks Kurt.

[Kurt]

You're welcome.