No pictures, but I've done the NanoTuners 4.36 upgrade to the hood, removed the wall between chambers 1 & 2, and put a hole in the false floor of chamber 1 to fit a heater.
Increases the flow to chamber 2, which increases the flow to the pump. I was having issues with it going from maximum to minimum (and spewing bubbles) in the span of a day, so rather than topping off every single day I just chopped that open a little more.