Hey bro,
It's good to hear that another Wamas member has Lou Han. Look like your Lou Han has ick. Last time, my Lou Han had ick. I just did a 30% water change, and raise the water temperture slowly to 90 degree in a day. I leave the water at 90 degree for a couple day, and gradualy bring it back down to 75-78 degree. How big is your fish? This fish is pretty hardy, just give him sometime. His had can be growing that much in just a couple day.
Have you check out this website:
http://www.flowerhornusa.com/forums/
This website has all the Diseases & Treatment for Lou Han.
I hand feed my Lou Han, and I can pet him. I love this fish. He is all by himself in my 125gal RR tank. I plan to convert this tank to saltwater. Check out my Lou Han, he is 7 inches now.
http://img295.imageshack.us/my.php?image=teelouhanpa2.jpg
http://img501.imageshack.us/my.php?image=teelouhan2xj0.jpg
Good luck, my friend.
Tee,