Temp problem

No i'm using a glass tank. And i dont know with it being summer and all

Just to be sure are your temps spiking and swinging from too hot to too cold over a short period of time?

Or are you seeing high temps stable?

they aren't really swinging besides the previous one i stated in the first but on the cool side it stays pretty much the same. it drops and rises earlier it was 78ish

Are you still seeing temps of 105? Did you turn down the t-stat?

No they are staying 88-92 and its set at 90

sounds like things are ok 78 cool is ok not ideal but not really too much of a problem. If you are finding the cool side temps low and the ambient air temp low addition of a flourscent light during the day may help if it is on the cover or inside it will give off heat during the day but not massive amounts just some. This can help raise the temps in a fairly natural way and allow for an over night drop especially if you can add some insulation (foam sheeting like blue or pink or even packing foam) to the sides or back.

Alright i'll goto walmart soon and get some stuff for the sides and back. About when should i move him up to a bigger tank? hes about 19 inches and 100 grams, probably more he just ate yesterday