Related Clues:
- Aquarium concern
- Despicable people
- Snack for a snail
- Slimy aquarium growth
- Aquarium cleaner's problem
- Seaweed and kelp
- Nasty film
- Bathtub ring gunk
- Fatty acid source
- Shower-door buildup
- Seaweeds, et al.
- Floating impurities or worthless people
- Impurities on surfaces of liquid
- Impurities on surface of liquid - or bad people
- Impurities on surface of liquid, or rotten people