The ideal Aluminum boat Bottom Paint, Trilux 33 a new tin-free antifouling formulated to provide safe, effective protection for aluminum boats, outdrives & outboards, or where a bright color or bright white is required. It is based on the latest Biolux® Technology, for improved control of slime and algae growth. It replaces Trilux and Micron 33. Trilux 33 is for use below the waterline on underwater boat hulls and parts in fresh, salt and brackish water and can be brush or roller applied. Benefits Specially formulated to be the safest & most effective product for use on aluminum boats, outdrives and outboards. It can also be applied to fiberglass, wood and other underwater metals. Highly effective antifouling protection from a new, improved version of Biolux technology. Available in Bright colors and True White - no more cuprous "greening" of traditional bottom paints