Fungal + Mold Management

A hydroponic fungicide fits into an IPM plan alongside sanitation, airflow and steady humidity, so disease pressure stays low from veg to harvest. Rotate biological and botanical sprays by mode of action, and add a UV-C lamp for spray-free passes over the canopy.

30 products

Fungal + Mold Management

Hydroponic Fungicide, Biofungicides and UV-C Tools

A hydroponic fungicide is a registered or exempt product for powdery mildew, botrytis and other fungal disease on indoor and greenhouse crops. This collection carries biological, botanical and peroxide sprays plus UV-C lamps. Start with our powdery mildew containment and control guide....

Hydroponic fungicide infographic: biological, botanical, peroxide and mineral sprays, UV-C tools, and label REI and PHI

These products sit under plant care. Climate matters as much as any spray, so pair them with dehumidifiers that hold relative humidity steady around 40 to 55%.

Types of Fungal Control

Biological and Botanical Sprays

Regalia CG is a giant knotweed extract that triggers the plant's own defenses, with a four-hour REI and zero-day PHI. Cease, Double Nickel and BotryStop are microbial products. Arborjet Eco-PM and Mammoth Control use plant oils under the EPA 25(b) exemption.

Peroxide, Mineral and Soap Sprays

OxiDate 2.0 pairs hydrogen peroxide with peroxyacetic acid and kills on contact without residue. Silmatrix is a potassium silicate registered as a fungicide, miticide and insecticide. M-Pede uses potassium fatty acids against mites, aphids and powdery mildew.

UV-C and Sulfur Tools

CleanLight units sweep 254 nm UV-C over the canopy with nothing sprayed. The Hobby unit suits a 2x2 tent, while the Pro covers larger rooms. The DL Wholesale vaporizer is a sulfur burner for greenhouse use.

How Growers Use Fungicides

Read the label for crop, rate, REI and PHI before every application. Rotate products with different modes of action, and spray for full coverage, since contact products only work where they land. Biologicals work best as a preventive, so start them before disease shows. Remove infected leaves first.

Frequently Asked Questions

How to get rid of mold in hydroponics?

Remove infected material, sanitize tools and surfaces, and bring humidity down into a stable 40 to 55% range. Then apply a labeled product. OxiDate 2.0 lists a preventative foliar rate of 32 to 64 fl oz per 100 gallons. Always follow the label.

What is a 25(b) pesticide?

It is a product made only from EPA-listed minimum-risk ingredients, which exempts it from federal registration. That is why it carries no EPA number. Arborjet Eco-PM and Mammoth Control are both 25(b) products built on plant oils, and Mammoth Control lists no REI.

Does UV light kill powdery mildew?

UV-C at 254 nm damages fungal and bacterial DNA on the surfaces it reaches. Tools like the CleanLight Hobby unit are passed over the canopy at a set speed and distance. Too much exposure can damage leaves, so follow the maker's directions and wear the included glasses.