I had a digital one (the one in the third shot), but the leads were very very long, so I took it out for right now- the two temp gauges I have (the humidity isn't petco brand) are temporary until I figure out something better, or find someone who can solder my tank so I can have the leads in the back. I'm planning on switching to a tub so it will be much easier to deal with the cords- I just don't have the skill to cut glass and I'm hesitant to poke holes in the screen. Or just find a thermometer with shorter leads. D: