The use of triploid-grass carp, Ctenopharyngodon idella (Val), in the control of submerged aquatic weeds in the Florida Lake, Roodepoort, Transvaal The use of triploid-grass carp, Ctenopharyngodon idella (Val), in the control of submerged aquatic weeds in the Florida Lake, Roodepoort, Transvaal Posted in .