I.don't have a pacman, but I did have temperature troubles in my a 10 gal quarantine RETF tank. I finally got where I needed the temp to be. I have a hygrotherm on one side and a temp/ hygrometer individual on other side. I have 1 8x10 and 1 5x6 uth on the bottom , then a 60 watt regular incandescent for day time and 50 watt red bulb for night. My hubby and I keep the house around 72 especially at night. So with all those great sources temp runs from 74-80. I have it set for 80 during day and 75 at night (on the zoomed hygrotherm). For a pacman, I def would not put the uth under the tank since they do like to bury themselves a bit. Dude mount it instead. Hope that helps good luck!





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