Best heating and lighting setup for 30x30x30 tank

[Bombina Bob]

Hello Ryokan fan welcome to the forum! the best heating device you can use for a pacman is a 50 watt bulb, 100 is way too much. You can monitor your temperature by getting a dimmer light for the bulb. You can use a heat mat but like you said they dont heat glass the best. If your frog is less than 2" i would suggest keeping him/her in a plastic critter keeper, You can talk to other members of the forum about pacmans, Grif and Carlos know pacmans much more than i do.