I had to break down my tank about 5 months ago due to several moves, got rid of my livestock and I am now in the process of putting it back together. I loved my diamondback goby and my fire shrimp, although the goby was very territorial and rearranged my whole tank. I was thinking about a pistol shrimp/shrimp goby combo. deciding what to put in is so difficult. there are so many fascinating fish. it's a 29 gal with decent pc lighting and a 4 inch sand bed and will have about 30lbs of liverock in it. I prefer non-agressive species. What do you guys and gals like? I am not in a big hurry. I am getting it going this weekend with the sand bed, next week I'll put in the liverock, just wanted to carefully consider my stocking options.