---
product_id: 302632479
title: "BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4"
brand: "biosafe systems"
price: "A$772"
currency: AUD
in_stock: true
reviews_count: 8
category: "Bio Safe Systems"
url: https://www.desertcart.com.au/products/302632479-biosafe-systems-zerotol-hc-broad-spectrum-algaecide-bactericide-and-fungicide
store_origin: AU
region: Australia
---

# Safe for edible & ornamental plants Broad-spectrum pathogen killer Eco-friendly, no toxic residue BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4

**Brand:** biosafe systems
**Price:** A$772
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4 by biosafe systems
- **How much does it cost?** A$772 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/302632479-biosafe-systems-zerotol-hc-broad-spectrum-algaecide-bactericide-and-fungicide)

## Best For

- biosafe systems enthusiasts

## Why This Product

- Trusted biosafe systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Boosts Plant Vitality:** Promotes stronger roots and stems for healthier, more resilient growth.
- • **Clean & Sustainable Use:** OMRI-listed organic formula keeps your environment spotless and safe.
- • **On-Contact Disease Defense:** Kills fungi, bacteria & algae instantly to protect your plants.
- • **Versatile Plant Protection:** Perfect for hydroponics, gardens, lawns, and indoor plants alike.
- • **Chemical-Free Peace of Mind:** No copper or harsh chemicals—safe around kids, pets, and wildlife.

## Overview

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 edible plants, pets, and children. Ideal for home gardens, hydroponics, and ornamental plants, it also cleans hard surfaces to reduce cross-contamination. OMRI-listed for organic use, ZeroTol HC promotes healthier plants by preventing diseases like powdery mildew and Botrytis while supporting sustainable plant care.

## Description

ZeroTol HC’s specialized formulation partners well with existing pest management practices as an effective fungicide for disease control, protecting plants through colonization. OMRI-Listed for organic use. This broad-spectrum algaecide, bactericide, and fungicide is made with a highly effective combination of peroxyacetic acid and hydrogen peroxide that leaves no toxic residue. GREENHOUSE AND ORNAMENTALS HARD SURFACES Use ZeroTol HC to control algal, fungal, and slime forming bacterial growth on hard surfaces 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. A clean environment reduces the risk of cross-contamination of insect pests and plant pathogens that thrive in organic matter and algae. FOLIAR TREATMENTS Use ZeroTol HC to prevent, treat, and control plant diseases on all flowering plants, ornamentals, house plants, vegetable, berry and fruit plants, trees, shrubs, and lawns. ZeroTol HC is ideal to control and suppress diseases like downy mildew, powdery mildew, leaf blight, and Anthracnose. HYDROPONICS AND AQUAPONICS* Treat hydroponic and aquaponic growing systems to control waterborne pathogens such as Pythium and Fusarium. ZeroTol HC helps reduce algae and biofilm in water lines and systems, helping to keep your system cleaner for longer. TURF AND LANDSCAPE Treat turf in well-established lawns to prevent the development and spread of disease and algae. Control landscape, tree, and shrub diseases such as powdery mildew. *Not registered for use in California

Review: Highly effective, great product, does exactly as it states - This is flat out the best product for bud rot in my opinion, and I've tried several different things and products and fixes. Make sure to wear mask and glasses if it's windy at all. Use 5 tsp per gal of water and soak it down (I use a pump sprayer) once every 5 days if you see it or have a problem, you can also use it as a preventative measure too. Great product, can't stress that enough saved me a ton of flower!
Review: Powerdery Mildew is a nightmare once you get it. ZeroTol is the answer. - This stuff is exactly what I needed. Got a nasty Powdery Mildew breakout this past summer in both my grow tents due to the humidity and my own laziness/ignorance. So I killed off a bunch of fully grow plants and sprayed whole tents down with bleach. And of course the PM came back in the next crop, so I killed more plants off. But this time I did some research online grow forums and with ChatGPT to find the answers. This stuff is safe to use directly on plants and will kill the PM. I found myself cleaning the shower mildew with it too. Works great!

## Features

- BROAD-SPECTRUM FUNGICIDE, BACTERICIDE: BioSafe Systems ZeroTol HC, algaecide and bactericide, kills plant pathogens on-contact and prevents disease development. ZeroTol HC is formulated for use around the home, garden, hydroponic system, and grow room to combat powdery mildew, Botrytis, and Pythium.
- NO HARSH CHEMICALS: ZeroTol HC kills fungus and algae without the use of copper or other harsh chemicals. This environmentally friendly acid-based solution leaves no harmful residue so you can have peace of mind using it around kids, pets, and wildlife.
- KILLS PLANT PATHOGENS ON CONTACT: Protect your plants and crops with this fungicide that kills plant diseases on contact. It also helps control waterborne pathogens such as Pythium and Fusarium*.
- IMPROVES PLANT HEALTH: ZeroTol HC helps improve overall plant health by promoting stronger roots and stems. It can be used on ornamentals in the landscape, houseplants, vegetables, berries, herbs, edible and flowering plants.
- MULTIPLE USES: Home, hobby, and small hydroponic growers can use ZeroTol HC to control plant diseases on ornamentals in the landscape, houseplants, vegetables, berries, herbs, and other edible plants. This clean chemistry offers a sustainable approach to plant health

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08XD8CGWF |
| Best Sellers Rank | #22,202 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #660 in Insect & Pest Repellent Sprays |
| Brand | BioSafe Systems |
| Customer Reviews | 4.3 4.3 out of 5 stars (98) |
| Global Trade Identification Number | 40188716000939 |
| Item Form | Spray |
| Item Weight | 37.7 pounds |
| Item model number | 6200-1 |
| Liquid Volume | 1 |
| Manufacturer | BioSafe Systems |
| Product Dimensions | 7 x 5 x 11 inches |
| Target Species | Insects |
| UPC | 810075190434 |

## Product Details

- **Brand:** BioSafe Systems
- **Item Form:** Spray
- **Liquid Volume:** 1
- **Target Species:** Insects
- **UPC:** 810075190434

## Images

![BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4 - Image 1](https://m.media-amazon.com/images/I/41Srj1Uo9gL.jpg)
![BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4 - Image 2](https://m.media-amazon.com/images/I/51qPTrdGE1L.jpg)
![BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4 - Image 3](https://m.media-amazon.com/images/I/612XwmXR3-L.jpg)
![BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4 - Image 4](https://m.media-amazon.com/images/I/61QiTCuUbXL.jpg)
![BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4 - Image 5](https://m.media-amazon.com/images/I/61do4bd+qFL.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Questions & Answers

**Q: Are there actually 4 bottles in this order? I see some people only received one and I was wondering if this is fall advertising, before placing order.**
A: My name is M. Larose, I am a technical representative of BioSafe Systems (the manufacturer). This item is available on Amazon as BOTH a single unit and as a case-pack of 4. There are multiple 3rd party sellers on Amazon, I would advise reading the details/full description of the item before making a final purchase.

**Q: Is this 4 gallons or 1 gallon total?**
A: I got one gallon! It was super tricky. I returned it.

**Q: Amazon will not allow delivery to my home location, how can i receive this product?**
A: It’s probably a good thing they don’t deliver to your house. I got this and only one bottle came with it, not four, so had to go through the hassle of a return. You can try the single bottle and see- they deliver to my house.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Highly effective, great product, does exactly as it states
*by A***N on October 29, 2025*

This is flat out the best product for bud rot in my opinion, and I've tried several different things and products and fixes. Make sure to wear mask and glasses if it's windy at all. Use 5 tsp per gal of water and soak it down (I use a pump sprayer) once every 5 days if you see it or have a problem, you can also use it as a preventative measure too. Great product, can't stress that enough saved me a ton of flower!

### ⭐⭐⭐⭐⭐ Powerdery Mildew is a nightmare once you get it. ZeroTol is the answer.
*by O***. on December 23, 2024*

This stuff is exactly what I needed. Got a nasty Powdery Mildew breakout this past summer in both my grow tents due to the humidity and my own laziness/ignorance. So I killed off a bunch of fully grow plants and sprayed whole tents down with bleach. And of course the PM came back in the next crop, so I killed more plants off. But this time I did some research online grow forums and with ChatGPT to find the answers. This stuff is safe to use directly on plants and will kill the PM. I found myself cleaning the shower mildew with it too. Works great!

### ⭐⭐⭐⭐⭐ Mold be gone
*by C***S on December 12, 2025*

Killed all the mold 10/10

## Frequently Bought Together

- BioSafe Systems ZeroTol HC, Broad Spectrum Algaecide, Bactericide, and Fungicide, Peroxyacetic Acid, Kills Mold, Single 6200-1, 1 Gallon, Case of 4
- BioSafe SaniDate 5.0 2.5Gl

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-04*