I'm starting a 40g mixed reef here at work. I'm starting with an All Glass 40g breader (18"x18"x36) and an building an in-tank sump on one end of the tank. You should see this tank in some future videos and images from DA as we'll be using it (when it's ready) to demo our new stuff as we roll it out. Should be a fun project and while it's a step up from my current 20g desk tank, it's a big step down from my 155 that I had at home. I'm excited to get this going!