Just pondering here..not sure if I want to do this, just trying to get some ideas. We have these kits at work, 12g saltwater kits. This is what they have: Instant Ocean 12 gal Marine Starter Kit Everything you'll need to get started in saltwater. Includes a 50/50 actinic compact fluorescent lamp, seamless acrylic or polystyrene aquarium, Instant Ocean salt, Instant Ocean hydrometer, plants, and a heater. Well...other than improved lighting and the salt, there's not much more than what I have for my 10g. Would it be that hard to convert my fresh 10g to salt? What other equipment would I need...would I need powerheads, a protein skimmer, etc? What type of filter is best (I would probably find a better filter as mine is just a stock tetra one). I've read that you don't even need a filter if you have enough live rock. I was considering doing the nano reef thing, but I really don't know the first thing about keeping corals (what would I need for that?). I am interesting in keeping one or two fish and a coral banded shrimp (I love them). Maybe a clownfish and a small goby...or a pair of bangai cardinals (probably would be stretching it there though). What kind of maintenance would I be looking at? Sometimes I go away for like 4 or 5 days (maybe twice a year), and there would be no one to do any kind of maintenance other than feeding (maybe I could get mom to add water but I'm not sure I trust her). Hmm..might be better off waiting and picking up like a 30g, but I'm curious if I can pull it off with what I have.