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Hydrogen Peroxide – Multipurpose Oxidizer for Aquaculture, Well Cleaning, and Disinfection

Hydrogen peroxide (H₂O₂) is a powerful oxidizer and a versatile chemical that is widely used in households, gardening, aquaculture and well cleaning. Cropper offers high-quality 12% hydrogen peroxide, which is excellent for demanding use. When it decomposes, only water and oxygen are formed - no harmful residues.

What is hydrogen peroxide and how does it work?

Hydrogen peroxide is a colorless, slightly more viscous liquid than water, with the molecular formula H₂O₂. It naturally breaks down into water (H₂O) and oxygen (O₂). This makes it an environmentally friendly and effective substance for many uses – without residues or toxins.

Decomposition releases excess oxygen into the water, which helps to combat bacteria, fungi and algae, making it an ideal choice for both maintaining hygiene and plant well-being in aquaculture systems.

Hydrogen peroxide in aquaculture

In hydroponic systems, where the plant roots are directly dependent on water and nutrients, it is important to ensure optimal oxygen levels and cleanliness. Hydrogen peroxide is an effective way to:

• Add oxygen to the root system
• Prevent root rot and pathogens
• Prevents the formation of biofilms and algae in pipelines
• Disinfect recycled water and water pumps

Common uses in aquaculture:

• NFT (Nutrient Film Technique)
• DWC (Deep Water Culture)
• Ebb & Flow
• Aeroponic systems

Cropper Pro Tips: Effective Use of Hydrogen Peroxide in Aquaculture

Hydrogen peroxide for well cleaning

Hydrogen peroxide is an excellent option for disinfecting wells because it kills bacteria effectively and decomposes harmlessly. When used correctly, it improves water quality and removes odors without the side effects of chlorine.

Recommended dosage:

Amount of well water	Amount of 12% hydrogen peroxide
500L	0.5–1 liter
1000L	1–2 liters
3000 L	3–5 liters

Pour hydrogen peroxide into the drain, let it sit for 3-6 hours, and then rinse the drain with clean water. After the soaking time, use water only when necessary until the odor is gone.

Using hydrogen peroxide for disinfection

Hydrogen peroxide can be used to disinfect surfaces, equipment and spaces at home, in the workplace or on farms. Its antimicrobial effect effectively destroys bacteria, viruses and fungi.

Applications:

• Kitchen and bathroom surfaces
• Cleaning pots and utensils
• Wound cleaning (diluted)
• Disinfection of greenhouses and aquaculture systems

Dilution tip:
1 part 12% hydrogen peroxide + 3 parts water = approximately 3% solution

Hydrogen peroxide vs. other cleaning agents

Feature	Hydrogen peroxide	Chlorine	Vinegar
Environmental friendliness	✔	✖	✔
Remnants	✔	✖	✔
Odor nuisance	✔	✖	✖
Suitable for aquaculture	✔	✖	✖
Disinfection efficiency	✔	✔	✔

Safe use

• Use protective gloves and goggles.
• Store away from light and in a cool place.
• Do not swallow or use internally.
• Keep out of reach of children.

How to store and transport hydrogen peroxide safely?

12% hydrogen peroxide is a strong chemical that requires careful storage and handling. The product is packaged in UV-protected HDPE bottles or canisters that block out light and slow down the natural decomposition of hydrogen peroxide.

Storage tips:

• Keep the product away from direct sunlight and high temperatures.

• Store in the original packaging, tightly closed.

• Avoid contact with metals, organic substances and flammable materials.

• Do not pour the used material back into the bottle to avoid contamination.

Transport complies with the regulations for the transport of hazardous materials. Although the 12% concentration is not classified as the most hazardous, containers must be secured carefully, especially when transporting larger quantities.

Hydrogen peroxide and ecology – why choose this cleaning agent?

More and more households, farmers and water utilities are looking for environmentally friendly alternatives to traditional cleaning agents. Hydrogen peroxide stands out because it:

• Breaks down harmlessly: The end products are just water and oxygen.

• Does not accumulate residues: Suitable even for food farms and aquaculture.

• No rinsing required: For many surface cleaning needs, wiping and evaporation are sufficient.

• It is odorless: No strong chlorine-like odor.

This makes hydrogen peroxide the perfect choice for applications where cleanliness, odorlessness, and environmental friendliness are important – for example, in plant cultivation, water supply, restaurants, and allergy homes.

Hydrogen peroxide and growth media

Hydrogen peroxide is also useful for cleaning growing media. Whether it’s coconut fiber, rock wool, or the tanks of an aquaculture system, disinfecting with hydrogen peroxide helps prevent the build-up of pathogens.

Examples of use:

• Disinfection of reusable pots and trays before a new planting round.

• Flushing the pumps, hoses and filters of the aquaculture system after the growing season.

• Disinfecting coconut fiber before sowing.

Combine hydrogen peroxide with the right supplies

Cropper's range also includes all the necessary accessories to help you get the most out of hydrogen peroxide:

• Pipettes and dispensers for precise use

• Protective gloves and glasses for safe handling

• Storage bottles for diluted solution

• Measuring jugs and funnels for easy pouring

High-quality equipment ensures that the use of hydrogen peroxide is both effective and safe in all applications.

Hydrogen peroxide in maintenance and repair work

Hydrogen peroxide is not just for farming and gardening – it is also an excellent tool for various maintenance and property care tasks. For example, rainwater tanks, gutters and sinks in properties can collect dirt, algae and bacteria over time. Hydrogen peroxide solution acts as an effective cleaning agent that helps remove biofilm without harsh chemicals.

Suitable applications:

• Flushing rainwater systems in spring and autumn

• Cleaning floor drains in washrooms and warehouses

• Algae cleaning of gutters without a pressure washer

• Disinfection of hand tools and protective equipment after use

Its versatility also makes hydrogen peroxide an ideal choice for professional service shops and maintenance companies that value efficiency, ease, and environmental friendliness.

Hydrogen peroxide and animal farms

Hygiene is of paramount importance on farms and animal facilities. Hydrogen peroxide can be safely used to clean animal feeders, drinkers and pens. Since it does not leave any harmful residue, it is also safe to use in areas where animals are kept. Small animal farms and poultry farms in particular benefit from the antimicrobial properties of hydrogen peroxide.

Practical examples:

• Disinfection of drinking vessels weekly

• Washing pens and cages with a diluted solution

• Cleaning animal transport crates

• Sterilization of treatment tables and equipment in veterinary use

Hydrogen peroxide and water purification tours – join us in the lap of nature

Hikers, campers, and boaters can utilize hydrogen peroxide to maintain water quality. When used correctly in small amounts, it improves the oxygen content of water and prevents microbial growth in transfer containers or drinking bottles. Although ensuring potability often requires a separate water purification method, hydrogen peroxide acts as a supporting additive in, for example, the treatment of graywater or the cleaning of drinking water reservoirs.

Please remember that using hydrogen peroxide in drinking water requires precise dosing and following instructions – we always recommend consulting an expert before using it for this purpose.

Why buy hydrogen peroxide from Cropper?

At Cropper, we know how important it is to have the right and clean chemical available – right when you need it. That's why we offer:

• Fast deliveries to all parts of Finland, even in one day!

• Affordable prices in both 1L and 5L packages

• Professional customer service that advises on proper use

• Safe packaging that withstands storage and transportation

Our customers trust us because we focus on quality and reliability. We are involved in the everyday lives of farmers, caregivers and home growers – offering solutions that really work.

FAQ – Frequently Asked Questions

What can hydrogen peroxide be used for?
For aquaculture, well cleaning, surface disinfection, pot cleaning and wound treatment (diluted).

Is hydrogen peroxide safe for plants?
Yes, when used correctly and diluted according to instructions. It even improves oxygen supply to the root system.

Can 12% hydrogen peroxide be used as is?
For some uses, yes (e.g. well cleaning), but dilution is often recommended.

How is hydrogen peroxide different from chlorine as a cleaning agent?
Hydrogen peroxide breaks down into oxygen and water, and does not leave harmful residues like chlorine.

How often should hydrogen peroxide be used in aquaculture?
1–2 times a week in small amounts for prevention. Larger amounts for disinfection during maintenance.

Read more about Hydrogen Peroxide from our Cropper ProTips blog below, how to use hydrogen peroxide correctly and what it can be used for. You'll be surprised!

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