For now i'm going with moving my 2 three stripe damsels and the dogface puffer to the 100 gallon when it has finished cycling. The puffer is only 4" right now, so i'm gonna add a snowflake eel. Think that'll be it for that tank. It will definately look empty for awhile. If i do ever observe any problems then i have many options. As for the 40 gallon, full reef with maybe 1 or two black perculas, 1 or 2 amphiprion perculas, and a mandarin goby. Still gotta do some research on compatibility.