I have a new 21 SFX that's been in the water for 3 weeks now and the tubes are getting covered with patchy looking black gunk. I've tried wiping it off while in the water but it comes off pretty hard.
This is strange looking, not just an even oxidation.
We paid to have Sharkhide applied at...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.