I definitely would NOT put in water. I have only ever used hot rocks on dry surfaces. Read the instructions on any heat element you put in water. Some small fish tank heater may work. Check the water level or you'll blow out your fish tank heater.
answered 1 year, 8 months ago
Oklahoma City, OK
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No, you can't submerge it in water.
The rock is water-proof, meaning it can get splashed, but the instructions say it is not submersible. I'm not sure what would happen, but finding out probably isn't worth the risk.
You can get an aquarium heater for your turtle, which is what I use for my red-eared slider. There are different wattages for different sized tanks.
answered 2 years ago
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