Will this work? A US boat hauled out at Norsand before we left and was vertually clean. I asked the guy what antifoul he used, was nothing special but he mentioned putting in a anti algae additive. Said it stops the slime that the barnies use to adheres to. Typical we find this out after having already painted on our own concoction but did manage to get a bottle from a well known supplier so is available here and added it to our left overs with a test coat on the rudder. Interesting that this stuff mixes in with mineral based paints.
Just wandering if anyone else has heard of it? I think Iv