in the pic from the top w/ the lid open, you can see the fuge. following others whom have done the same here on RC, I removed the black "wallpaper" covering chamber #2. Built a plexiglass housing and painted it to contain the light from spilling out and fixed a 15w pc light to the inside of it. It runs on a reverse cycle from that of the main tank and is filled 1/2 with LR and a small ball of cheto. the 1st chamber is also loaded with LR with the stock foam cut in half in order to catch any large debri that enters the sump. The amount of pods that my tank now has is simply amazing. I would recomend this mod strongly to anyone. Would have liked to put the fuge light in the hood but I have other plans for that area(chiller) in the future. because of this, I do have to clean of the glass on the inside every so often.