In getting to do a 20 long as a mixed reef I think. Here's my question...... I want to do a refugium in the middle of my sump with a DIY algae scrubber that will be above the fuge. Is this a good idea or not. I would run the light at the opposite times that the display is on. And next would a protein skimmer be a must at that point? I don't want to run one but will if I have to. I'll have a couple of reactors going as well. Any and all thoughts and opinions are greatly appreciated. Thanks.