Question about Temp

Ok I have a couple questions. I cant seem to get my humidors temparature past 76-78 range. The humidor I have has a glass top. I though it was causing a green house effect. Is this temperature bad for the cigars?

So I saw a article about the cooledors and try one. Hummidity no problem, but the temparatue is the same around 78. I live in south florida and my house is always around 72-74 and keep the cooledor in the clooset.

I am using that 50/50 soulution. Is there nay product to lower the temperature? I really dont know what to do and i feel the high temp may be drying out my cigars and some have started to become flaky.

Help cigar gurus!