tank you tank you Judy

Is it better to get a read from the bottom of the tub, or on top of the substrate?

I would think bottom of the tub because snakes like to burrow and move the substrate around till there is no more....

I need one of those laser temp guns.

I went over to Alice's place last night to check out her collection (had an awesome time!) and they were using a laser thermometer....very cool.