Did'nt recieve any help on M.R.'s so I figured I would try copying and pasting to see if I can get any help here.

I have a mated pair of plain jane occy's They host their anemonea and everyone is happy except for the anemonea. Having a hard time getting the flow right for everyone so I am looking at giving them their own tank. I know when you get a tank everyone says bigger is better but we are limited by area to a footprint of less then 36 inches. I like the cubes but the wife does'nt like the cost so we have settled on the marineland half moon shaped tanks as the style she would like and I can deal with. They make a 10,20, and 30. Other then more frequent water changes being a pain with smaller tanks. I am wondering what size tank would be sufficient for the clowns, their nem, and maybe a goby(like the mini watchmen that F. Drs. have)/shrimp combo? The 20 or the 30? That or if I can find a complete set up for under 300 bucks that would make her happy too.