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

🌿Organic & residue-free

💧Hydroponic & aquaponic safe

🦠Broad-spectrum pathogen kill

651.93 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌱 Zero tolerance for plant pathogens—grow fearless, grow flawless!

CLEAN SURFACE DEFENDER - Eliminates biofilm and slime on greenhouse tools and hard surfaces to prevent cross-contamination.
ECO FRIENDLY POWERHOUSE - No copper or harsh chemicals—safe for kids, pets, and the planet.
VERSATILE PLANT PROTECTOR - Perfect for ornamentals, veggies, berries, and hydroponic systems alike.
ROOT STEM STRENGTH BOOSTER - Promotes robust plant growth by enhancing root and stem health.
ON CONTACT PATHOGEN ERADICATOR - Instantly neutralizes fungi, bacteria, and algae for healthier plants.

BioSafe Systems ZeroTol HC is a powerful, broad-spectrum algaecide, bactericide, and fungicide formulated with peroxyacetic acid and hydrogen peroxide. It kills plant pathogens on contact without harsh chemicals, making it safe for use around children, pets, and wildlife. Ideal for home gardens, hydroponics, and greenhouses, it controls diseases like powdery mildew and Pythium while promoting stronger plant health and cleaner growing environments.

Specifications

ASIN	B08XDPT2JR
Best Sellers Rank	#45,749 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,092 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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651.93 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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