First things first, you need a new enclosure ASAP you are running a heat light, UV light and heat pad on a 2G tank. There is no way you can provide a heat gradient. The lizards WILL over heat and WILL die in these circumstances. The dark one isn’t sounding to good, Dark or black all the time like you mentioned is a sign of a soon to die lizard. I would recommend a minimum of a 10G tank for those 2. Its not to expensive. Now adays you can get the tank and screen lid for under $30. Other than the enclosure everything ells sounds good.
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