Hydrothol Granular (2 x 20 lb) works to control for weeds and algae. Hydrothol Granular works primarily at rates of 0.05-0.3 ppm as an algaecide, and can provide for control in as quick as a few days. Hydrothol Granular has minimal water use restrictions.
Controlled Weeds: weeds, algae, including planktonic, filamentous, and branched algae.
Use on: quiescent, slow moving, and flowing water areas.