Hmm, at first people told me not above 80F. I did get a heat lamp that is 18" above my pixie and him and it keeps the tanks ~84-86F on one end and 76-78 on the other using a 12 hr cycle but off 2 hrs on 1 and repeat. They are in the living room which is basically all windows so I didn't want to cook them.

I do use a treatment for all their water as well as use the purifying things for you sink faucets which remove chlorine and other stuff.

He completely ignores them even when they walk past or on him, and moves back when you tong near his face with a cricket.

I have left 3 in there over each night and they are never eaten so I drop them in for my pixie which destroys them in the morning.

EDIT:
What should I use to cover teh sides could I use black spray paint and just cover the top (him not in there obviously)
I do like my home cold SO I usually leave it on 69-70F Though I have changed it to 72F recently.