So I live in utah and right now its COLD my terrarium stays at 20 C 68 F does not go higher and does not go lower it stays the same ? If I were to get a submersable heater what would you guys recommend what watts and what brand also I dont have a basking light all I have is a UVB light the length of the tank . maybe instead of heating the water and a basking light what do you think about getting a ceramic heat emitter for the whole tank to warm the water and for warmth for basking and keeping it on 24/7..

I would really like your thoughts and inputs...

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HERE IS MY TERRARIUM SET UP