I've never heard of a way to force a clown to host. Some host in powerheads, some in veggie clips. Mine hosts in everything, unfortunately, lol.
A word of caution, though, I don't think that any anemones are naturally white. You probably have a bleached specimen on your hands. You should feed it regularly in order to bring it back to full health.
P.S. For your ticker question:
http://www.tickerfactory.com/ezticke...r_designer.php