I have this problem. I tried scrubbing with a broom, but I need to
get a lot of water on and the algae were pretty adhesive. Is there
a way of loosening them without damaging the polythene? I am inclined
to try dilute bleach.


Regards,
Nick Maclaren,
University of Cambridge Computing Service,
New Museums Site, Pembroke Street, Cambridge CB2 3QH, England.
Email:
Tel.: +44 1223 334761 Fax: +44 1223 334679