Alrightly, I'm a complete salt noob, so bear with me please. I'd love to go larger, but I know myself, and larger means more $$ spent on coral, so I'm going small.
I'm going to be setting up a 10 gallon nano reef. It's going to have a 40 watt CF over it with 10000°K daylight and 460 nanometer actinic lighting. I've been told this is ok for medium lighting? It's on a dual tank shelf which can fit another 10G below it. It's kinda wedged behind my couch so the lower tank is not something easily observed, I planned on using it for a snail breeding tank, but I'm starting to think a sump would be good.
My questions: I assume doubling the tank size would allow for heavier stocking? How complicated is it to rig up this type of filtration? Would I put the protein skimmer & that kind of thing in the sump? Am I at some point going to flood my house by accident if the power goes out? Are there any systems out there that come pre-made? Do I need an overflow in my main tank?