Possible Clues:

• The majority of this about one with a little water
• Ideal, as potting soil
• Film contains nothing sloppy
• Damp fog - nothing to be seen in it
• Wet politicians at the centre, in the majority
• Film about love is a bit wet
• 'Very much about one, but less than 13 across (5)'
• Like a well-prepared turkey
• Like teary eyes
• Wet Canucks from '90s?