I just installed the aquaticlife 115in my first chamber. I had to cut a 2"x1/4" notch in the side of hood for the mounting bracket. Another mod I did was extending the airline and adding an air control valve to the airline. While I was attempting to remove the airline fitting from the body of the skimmer I accidentally cracked it, I ended up drilling it out. I also put a pice of filter floss in the return chamber or the skimmer to help with micro bubbles. It is still breaking in so I'm not sure about the effectiveness of the skimmer.