The apistogrammas, never seen them before, sound beautiful. Looked some up on internet. They are colorful. I think I will have to go to the petstore on the other side of town for these fish, the lfs don't have them. I will need to setup the 20 gallon and cycle it first. So it might take a while before I can buy any fish.
If i decide on shell dwellers, I need help with what type of setup they need and any other info would be appreciated. How many can I fit into a 20 gallon. Can I use my 10 gallon, how many. Not sure which tank I should use for them. It looks like that they need sand for substrate, never dealt with sand before. What type and how much in tank. What do the shelldwellers eat. See I have no idea about these little guys, but they do sound interesting. Are they in shells all the time or certain times of the day or night. I don't want fish I can never see in my tank because they are hiding.