I want a small complete aquarium, maybe 20 or less gallons. I would think top quality live rock and sand (because that is by far what I am most interested in) 2 clown fish, 4 green chromis, a feather duster, a starfish, and maybe 8 hermit crabs. I dont know if I would add corals. I did have a 200 gallon tank many years ago so I have a bit of knowledge on mistakes. I am thinking this would be a pretty simple tank to maintain. But I would love to hear advice in any way, like what nano tank, easy coral, perhaps other marine life, best live rock etc. Whatever you guys got.