I'm going to kinda follow along in this build. As far as filtration I would go with the following: algae turf scrubber, sump with a fuge consisting of dsb
macro algae and mangrove, skimmer. This is by far the best set up and for natural filtration and the best down the road. Some corals to look at are green star polyps, mushrooms, leather corals, zoas, some Lps
like candy Cain, hammer coral, torch, then the Sps
such as acros, birds nest. Etc. It all depends on the lighting you want. Let's start off with a few basic questions:
1. Do you want just fish? (Ie aggressive)
2. Do you want a reef tank dominated by corals?
3. What type of fish are you interested in? Color shape?
4. What's your budged like ?