g'day john,

have you checked out dipel?

as with all things best to keep it out of waterways and that should
happen as the pool is contained?

the other link appears to be more about repelling the mossy from the
person.

On Sat, 20 Jun 2009 10:40:09 +0000 (UTC), John Savage
wrote:

snipped
With peace and brightest of blessings,

len & bev

--
"Be Content With What You Have And
May You Find Serenity and Tranquillity In
A World That You May Not Understand."

http://www.lensgarden.com.au/