No special paint is needed.If you have a rattle can of black use it. Makes no difference if its fusion, lacquar or enamel, alkyld or acrylic..Even brush or roll on paint works just as fine. No worry about runs or sags, or if its gloss, flat or semi gloss, it all will look glossy and run free when viewed from within the tank. I like cheap brands of regular latex paint. Applied with a small sponge roller......if you ever decide to chage or remove it, its a fast easy job with a simple razor blade.......then again most paints remove pretty esay with a single edged razor blade anyhow.