First of all this my first post here so I am not 100% up to date on the lingo. I have a 55g mixed reef tank. I just recently added a 10g sump (10g tank with baffles installed) and it doesn't really have the room to add a fuge so I am really looking into a scrubber. I also don't have the room to add a waterfall type scrubber, so I am looking into the HOG option. I have been doing a little research and found that microwave safe restaurant "to-go" containers seem to be the favorite option. I understand the general idea of using air line to push water up through the container. My question is: I have about 6 deep red solder-less Phillips LED's left over from a build for a friend's tank and I know that's what I need. Will the single LED heat sinks melt the plastic container? These are the heat sinks: Small Single LED Heatsink - Rapid LED Another route was to buy a hammond project box and buy 3.5"x6"x1" heat sink. I am just not sure of the heat output. Second question; Do you want to run the scrubber before or after the skimmer? If you have a waterfall type scrubber can you just run it off your return line?