advice

In terms of corals, your best bet is going to land you in the zoanthid and Softie category. Colt corals, Green Sinularia, Toadstools, Ricordea, and most zoanthids. I'd stay away from most palys (which look like zoas, but are generally bigger and more dull in coloration). Others to stay away from include green star polyps, pulsing xenia, and waving anthelia. They're very good at blowing up your tank and not leaving. When you get into the realm of stony corals, it's important to monitor and potentially dose Calcium, Alkalinity, and Magnesium. Get more used to watching Nitrate, Nitrite, Phosphate, Ammonia, and Salinity before getting deep enough to test for the Big 3 (Ca, dKh, and Mg). Fish for the Biocube would have to be something small. 14 gallons in saltwater terms is seriously small. A single clownfish, a cleaner shrimp, and maybe a firefish would be plenty. I don't have experience with Halides, but I think F.D. Reefer has a dual 175 watt with PC supplementation unit for lights. He has a 72 bowfront that looks gorgeous, especially lit with halide. Just gotta control the heat!

Oh and when changing water, use a small pump to move the water into the sump from your mixing vessel, it'll keep it from disrupting a lot of what you have going on in the display.

 

Clean up crew will add to the bioload, but it's negligible. I'm a fan of snails over hermits though. Turbo snails get huge and can knock things over though. Otherwise most snails do a great job. Peppermint shrimp can SOMETIMES take care of aiptasia, which are nasty little things to get rid of.