AquaMaster Aquatic Glyphosate Herbicide - 2.5 GallonAquaMaster Aquatic Glyphosate Herbicide is a broad spectrum postemergence herbicide and the direct replacement for Roundup Custom. Formulated with 53. 8% glyphosate, AquaMaster is approved for use in and around aquatic sites as well as industrial, turf, ornamental, forestry, roadside, utility rights of way, and select crop applications. AquaMaster controls a wide range of annual and perennial grasses, broadleaf weeds, brush, and aquatic vegetation,