nice frog you got here, by the way it seems that many of us here started out with fish tanks Welcome to the forums!

check out this care sheet Frog Forum - Pacman and Horned Frogs - Ceratophrys - Care and Breeding

i must say pacman frogs are not really low maintenance, but once you get hand on it and get all you need it is not that difficult.

first thing that i would like to clarify - what do you mean by underground heater? undertank heater( UTH) I assume, where have you placed it? it must be on a side, never under tank for pacman frog!

next - what kind of light do you use, it is very important because you have albino.

do you use any supplements?

the substrate seems a bit too dry, what exactly is it? it seems to have a lot of stringy things in it.

what kind of water do you use?