Trying to achieve 88-90 degrees on the floor where the heater is. The hot zone. The only differences between the two tanks is the Aquarium is not as long as the terrarium & the glass is slightly thicker on the aquarium. Same depth and height for both tanks. 15 gal aquarium and a 20L terrarium. So the 20L is about 5-6 inches longer. Sreeen tops on both so ventelation is the same. Same exact tiles on both tanks. I would think the 20L would be harder to heat since its bigger. I think its the heater personaly, because the heater on the 20L needs a thermostat to keep it from getting too high but the 15 gal aquarium is run without a thermostat on full blast and it wont get up to temps.

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