Primocon® is an anti-corrosive primer for all underwater metalsurfaces It will provide an excellent barrier to reduce pitting causedby galvanic corrosion. For non-aluminum underwater metal use any(non-vinyl) Interlux antifouling paint. An excellent primer forantifouling paint over sanded fiberglass. Primocon can be used as aconversion coating over unknown well-adhered antifouling paint toprevent cracking of new antifouling paint Primocon will not affect thecolor of antifouling paint.