Well, well, well. now that I have the 45 up and running happily.. I am bored.. 
Soo since I have a 20 here ready to go and I have all the parts n pieces I need. Time to set up a biotope. Looking at a deep water indo-pacific setup. 
Here is my possibilities for fish.
Serranocirrhitus latus, Fathead or sunburst anthias. 
 
Anthias link 
Nemateleotris decora, Elegant firefish
 
Firefish link 
Pterapogon kauderni, Banggai cardinal
 
Banggai link 
 Banggai link 
Pseudochromis porphyreus, Magenta dottyback
 
dottyback link 
As for corals it will also be various Indo Pacific corals. Obvioulsy lower light requiring corals, mushrooms, zooanthids etc. 
Lighting will be 3 20W phillips 03's on an Icecap or workhorse and one 75W aquasun VHO on a workhorse 3. Skimmer a PM HOT-1. MJ-1200's, 900's and an Aquaclear 500 for circ.  
Any suggestions are welcome.