Kole tang still not eating!

[naesco]

Have you feed it nori soaked in garlic extreme and selcon. If not you should do this now, often and if it eats it.

Do you have at least one side of your tank left 'dirty'?

Kole tangs need to feed on film algae which is the greased stuff you feel see on the glass. They will also eat it off of smooth stones you place in the glass.