How much to use and how often?

You'll want to dilute it down A LOT. A spray bottle that is ~800ml (regular sized bottle) only needs 8ml of zerotol to get the right concentration for cleaning plant trays. (1:100) this jug will last a long time

will this work on blackspot on roses?

Yes it should, be sure to spray early in the morning but if you don’t think it’s working, try The Amazing Dr. Zyhmes

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BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon

BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon

Product ID: 375353618

Details

Brand
BioSafe
Item Form
Spray
Item Weight
16 ounces
Liquid Volume
1
Target Species
Fungus

🌿OMRI-listed organic-safe formula

💧Residue-free, eco-friendly peroxyacetic acid

🧪Broad-spectrum fungicide & bactericide

¥31754

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Description

🌱 Protect your plants, protect your planet—ZeroTol HC means clean, green growth!

ECO FRIENDLY SAFE - No copper or harsh chemicals—perfect for homes with kids, pets, and wildlife.
MULTI SURFACE SANITIZER - Cleans greenhouse tools, benches, and watering systems to prevent cross-contamination.
ROOT STEM STRENGTHENER - Promotes robust plant growth by improving overall health and disease resistance.
ON CONTACT PATHOGEN KILLER - Instantly neutralizes mold, mildew, and algae for healthier plants.
VERSATILE PLANT PROTECTION - Effective on ornamentals, vegetables, berries, and hydroponic systems alike.

BioSafe Systems ZeroTol HC is a powerful, broad-spectrum algaecide, bactericide, and fungicide formulated with peroxyacetic acid and hydrogen peroxide. OMRI-listed for organic use, it kills plant pathogens on contact without harsh chemicals or toxic residue. Ideal for home gardens, hydroponics, and greenhouse environments, it controls diseases like powdery mildew and Pythium while promoting stronger roots and stems. Its multi-surface application keeps tools and growing areas sanitized, reducing cross-contamination and supporting sustainable plant health.

Specifications

ASIN	B08XDPT2JR
Best Sellers Rank	#40,273 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,007 in Pest Repellents
Brand Name	BioSafe Systems
Customer Reviews	4.4 4.4 out of 5 stars (109)
Included Components	fungicide
Item Form	Spray
Item Type Name	Fungicide
Item Weight	16 ounces
Liquid Volume	1
Manufacturer	BioSafe Systems
Model Number	SINGLE 6200-1
Part Number	SINGLE 6200-1
Target Species	Fungus
UPC	188716000931 810218060006 810075190045
Unit Count	128 Fluid Ounces

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¥31754

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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