It seems like your temps are still too low. The ideal temp range for pacs is a daytime range of 80-82 Farenheit (26-28 C) and a nighttime range of 75-80 Farenheit (24-26). The temps on his low end are getting down below 70 Farenheit, which is low enough to make them not eat. You can use a red heat bulb for albinos, provided it is not more than 40 watts. And the red bulbs can be left on day and night, since most reptiles and amphibians can't see red light and it won't affect their day/night cycle.