The topic pretty much explains it. Even in duplicates of existing watertypes with only wind direction changed I'm not getting any underwater fog, I'm seeing the same weather/imagespace that is currently active in the worldspace. Any idea why?

Do you have any other water mods or anything active? I altered some vanilla watertypes, and while it was perfectly fine for me, some of my testers with various water related mods got super thick blue fog underwater in my special types abruptly. So might be a conflict?

I had a couple, but disabling them both did not help. Nor did disabling everything except Skyrim/Dawnguard/Ethas. In past titles, depth fog was controlled by imagespace modifiers, how is it controlled now?