ZeroTol® HC

Broad-Spectrum Algaecide / Bactericide / Fungicide

ZeroTol HC is a broad-spectrum algaecide, bactericide and fungicide peroxyacetic formulated for the homeowner and hobby grower. It is a no residue sustainable chemistry that is proven to keep diseases such as Powdery Mildew, Botrytis and Pythium at bay. With no toxic residues and a 0-day preharvest interval, ZeroTol HC gives homeowners peace of mind as it is safe for people, pets and wildlife.

  • Active Ingredients Hydrogen Peroxide Peroxyacetic Acid
  • Certifications OMRI Listed
Closeup of multicolored vegetation on ornamental plant

Why ZeroTol HC?

ZeroTol HC’s specialized chemical composition partners well with conventional and biological pest management practices already in use. As a no residue disinfectant, it can be followed by biological applications that protect plants through colonization.

  • Promotes stronger roots and stems
  • No residues
  • Kills disease on contact
  • Environmentally responsible — Sustainable chemistry
  • Can be used around people, animals, pets, birds and other wildlife
  • 0-day preharvest interval

Where can ZeroTol HC be used?

Greenhouse and Ornamentals

Home, hobby and small hydroponic growers can use ZeroTol HC to control diseases on ornamentals in the landscape, houseplants, vegetables, berries, herbs and other edible plants. Zerotol HC can be used to disinfect greenhouse surfaces and equipment, such as: glazing, plastic, pots, flats, trays, cutting tools, benches, work areas, walkways, floors, walls, fan blades, watering systems, coolers, storage rooms, structures and equipment.

Hydroponics and Aquaponics

Treat hydroponic and aquaponic growing systems to control water-borne pathogens such as pythium and fusarium.

Turf and Landscape

Treat turf in well-established lawns for disease and algae. Control landscape, tree and shrub diseases such as powdery mildew.

  • Greenhouse and Ornamentals Pathogens
    • Downy Mildew
    • Powdery Mildew
    • Leaf Blight
    • Anthracnose
    • Botrytis*
    • Xanthomonas*
    • Rhizoctonia*
    • Leaf Spot*
    • Pseudomonas*
    • *Not approved for use in California.
  • Turf and Landscape Pathogens
    • Anthracnose
    • Brown Spot
    • Dollar Spot
    • Summer patch
    • Copper Spot*
    • Strip Smut*
    • Take-All Patch*
    • Leaf Spot*
    • Fusarium*
    • Fairy Ring*
    • Pink Snow Mold*
    • Pythium*
    • Phytophthora*
    • Rhizoctonia*
    • *Not approved for use in California.
  • How to use ZeroTol HC
    ZeroTol HC Application Rates
    Foliar Spray 25 mL/gallon Apply at 5-7 day intervals. Spray for contact of entire shoot, leaves and stems down to media. Use 2 gallons of solution per 400 sq. ft.
    Hydroponics and Aquaponic 10 mL/50 gallons Use higher label rate for established algae. Apply 1-time weekly.
    Surface Treatment 25 mL/gallon Allow to remain wet with solution for 1 minute.