Hi Guy's
I been skeptical on this sort of technologies
but i have to amid that this is working like a treat
looking at some boats that have installed Marine Sonic over the last 16 months
Aim positive to purchase a unit this month to suit my 28f motor sailor costing $2,749 Au
With the guarantee of 2 years and full money back from the company if this not works on my boat within 1year
I should return cost with in 1 year and a bit
This is afar cry from other so called antifouling systems and a lot more cost
Works on most boats hull except wooden old hulls
This keeps prop clean to with water tans and diesel call algae
Just off interest you can get it here
and they post world wide
site to vised
http://www.asmaustralian.com/marine_sonic.htm
Lynger1