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

🌱Promotes stronger plant health

🦠Broad-spectrum pathogen kill

♻️Eco-friendly, no toxic residue

¥27943

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Description

🌿 Zero tolerance for plant pathogens, 100% peace of mind.

VERSATILE APPLICATION - Safe for hydroponics, ornamentals, turf, and hard surfaces—your all-in-one plant defense.
ORGANIC RESIDUE FREE - OMRI-listed, acid-based formula leaves no harmful chemicals behind—perfect for eco-conscious growers.
DISEASE PREVENTION CONTROL - Stops powdery mildew, botrytis, pythium, and more before they spread.
ON CONTACT PATHOGEN ERADICATION - Instantly neutralizes fungi, bacteria, and algae for healthier plants.
SYSTEM CLEANER BIOFILM REDUCER - Keeps water lines and equipment pristine, reducing cross-contamination risks.

BioSafe Systems ZeroTol HC is a powerful, broad-spectrum algaecide, bactericide, and fungicide formulated with peroxyacetic acid and hydrogen peroxide. Designed for use in home gardens, hydroponics, and commercial grow rooms, it kills plant pathogens on contact without harsh chemicals or toxic residues. OMRI-listed for organic use, it promotes stronger plant health while effectively controlling diseases like powdery mildew, botrytis, and pythium. Its versatile formula also cleans hard surfaces and water systems, making it an essential tool for sustainable plant disease management.

Specifications

ASIN	B08XDPT2JR
Best Sellers Rank	#30,513 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #881 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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TrustScore 4.5 | 7,300+ reviews

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¥27943

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

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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