Related Clues:
- Some fish food
- Yucky pond coating
- Green growth in a pond
- Pond scum, typically
- Growth from stagnation
- Commuters failing to get Metro for film
- Seaweeds tangled up in a gale
- Those one despises in unpleasant film
- Organisms in birdbaths
- Film in a shower
- Plants with no roots or leaves
- Mucky green stuff in pools
- Green pond growth
- Unwelcome aquarium growth
- Film about fish tanks?