I'm looking into ceramic heat emitters to use during the winter months for my 5 to 6 month old leopard gecko (his age is a total guess as he is a rescue). I have never used a CHE before so I'm not sure what wattage I should be using or which brand I should get. I'd be using it for a tank that is 18 ins long x 18 ins wide x 12 ins high and in conjunction with an 8x12in heat mat. I have already been recommended the petco brand CHE but in all honesty I've been trying not to buy things from petco becuase of how they treat their animals, at least the one near me doesn't take very good care of their geckos, iguanas and bearded dragons.