Hydrothol 191 Aquatic Algicide Herbicide - 2.5 Gallon Repellents Magnesium as Mg - 3

Magnesium as Mg - 3

Kills perennial and annual grasses

they can grow between 3 to 4 feet tall

and nonbearing deciduous fruit and nut trees grown in nurseries

Ideal for most hydroponic crops

Hydrothol 191 Aquatic Algicide Herbicide - 2.5 Gallon Repellents Magnesium as Mg - 3Hydrothol 191 is a liquid formulation that provides control of both weeds and algae. Used primarily as an algicide at rates of 0. 05 0. 3 ppm, it provides excellent control of a broad spectrum of algae including planktonic, filamentous, and branched algae. Hydrothol 191 also provides control of aquatic vascular plants and can be tank mixed with Aquathol K to improve the efficacy on difficult to control weeds. Hydrothol 191, works relatively quickly