I just got my Waterbox 70 gallon reef edition (not marine). And this will be my first sump. I want a refugium and a protein skimmer. Left side of sump- 2 filter socks. This goes to the middle chamber, here I plan on placing my refugium and heater. Is there a better spot for a heater?Back right chamber- that will be my return.Front right chamber- that will be my auto top offNow, where do I put my protein skimmer?View attachment 8186