Thanks Spypet, I appreciate the effort you put in to research the orbs. I was thinking along those lines. It would no be a problem to change the water every week. For CO2 enrichment I could use Excel. I'm not to sure about putting shrimp in there but, I could use a ghost shrimp. At 33 cents a piece it would not be a major investment. What do you think i should use for lighting? Could I put in a small anubias and use ambient room lighting? Thats the crux of my dilemma, what to use for lighting? I do think I could use java moss. I gave some to my mother-in-law for my old 3 gallon eclipse that she has. She NEVER turns on the light and somehow the java moss grows in there, I think it receives light from a window about 10 feet away from the tank.