glass scrapers

["Roxanne Bittman" <rbittman at dfg_ca.gov>]

Perhaps some of us are just less coordinated with blades than others, me
included?  I don't know why there is such a variety of opinions on
whether razor blades scratch glass other than technique variation.  In
any case, it seems pretty moot to me since the Kent Algae Pro Scraper
came to be.  This thin plastic thing will not scratch glass (with
acrylic, watch it though) and has not failed yet to remove any glass
algae I have seen without making you break a sweat.
Roxanne Bittman