On Tue, 10 Jan 2012 11:33:06 +0000, Jake Nospam@invalid wrote:

I find it next
to useless for removing algae from paving unless it's virtually neat.

Bleach is the best and cheapest algaecide. If you remove the algae
with bleach enough will remain to prevent algae growing again. Take
precautions to prevent run-off.

Steve

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