Heating issues

Where are the ventilation holes??? I would cover the areas with foil that won't compromise ventilation.:gj:

The ventilation is on top (you can't really see in the photo). Okay so cover the sides of the cage on the outsides in foil?
And yes the ship is a hide and I'm hoping to get a bigger vivarium with better heating systems this summer. But for now should I try the foil and then get a basking light if it's not improved?


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