Liquid Seaweed Biological Fertiliser
Nourish Your Soil for Nutrient-Dense Crops and Healthy Pastures
Packed with a full spectrum of naturally balanced minerals, microelements, and enzymes, Liquid Seaweed Biological Fertiliser not only acts as a biostimulant to activate soil microbes but also provides crops with a quick delivery of bioavailable organic nutrition.
Mineral and Microbial Soil Amendment
Liquid Seaweed Biological Fertiliser, activated with beneficial microorganisms, can be applied at any time of the growing season to promote healthy root systems and produce highly nutritious crops.
Liquid Seaweed Fertiliser Benefits;
- Improves seed germination, strike quantity, and growth rate
- Boosts beneficial soil microbes
- Strengthens plants against disease and climatic stresses
- Can accentuates taste, aroma, shelf-life and nutrient density
- Supports protein production in protein-rich crops.
SONIC Liquid Seaweed Biofertiliser is derived from sustainably harvested Australian Durvillaea Potatorum (Bull Kelp). Cold processed with beneficial microbe cultures. No fillers, additives or preservatives.
Curious about the benefits SONIC Liquid Seaweed could have on your crops? Give us a call.
Pricing Guide
Choose your Supply Option
MADE-TO-ORDER BIOFERTILISER PRODUCTS
$2.30-3.90/L
Liquid fish and seaweed biological products made and supplied fresh starting from 180L per product.
✔ Products delivered ready to use
✔ Produced to specifications
✔ Ideal for convenience
✔ Australia-wide delivery
✔ Container refill-program (optional)
*Limited stock available. Made to order (10–12 weeks lead time). Contact us for product availability.
ON-FARM PRODUCTION SYSTEM & TRAINING
$1.80-3.50/L (initial) ~$1.20/L (ongoing)
On-farm production system with training included starting at 540L combined products.
✔ Live 1:1 training at first batch start
✔ Scalable on-farm production system
✔ Designed for repeatable batch production
✔ Raw ingredients supplied (Australian)
✔ Quality outcomes guaranteed
Initial cost includes first-batch setup and training. Subsequent batches typically produce at approximately $1.20/L. Read more.
ON-FARM PRODUCTION SERVICES
$2.20-3.80/L
Complete on-farm setup and system management by our expert operators starting at 2,000L combined products.
✔ Fully managed production on-farm
✔ Freshly processed products for time of use
✔ Ideal for larger or time-poor operations
✔ Raw ingredients supplied (Australian)
✔ Quality outcomes guaranteed
On-farm production services are subject to operator availability, location, and regional service coverage.
Biological Products Storage
SONIC Biological Products contain no artificial additives or preservatives and provide maximum efficacy when used within 3 months of production. This helps maintain strong microbial activity and ensures the full range of biological benefits remains available at application.
Biological Products should not be stored in a diluted form. The rates suggested are general, and will vary according to your soil health, land management practices and stock condition.
If you would like to discuss biofertilisers as an option on your farm, contact us.
See What Australian Farmers are Saying
COST SAVINGS
You really can see the difference, just driving up the road. We’re happy, and it has actually saved us a lot of money on extra fertilisers.
GREAT RESULTS
If I see something once and something that dramatic, I know it’s got to be doing good.
RESILIENCE
I think it’s doing a fantastic job! We have had the best year with the most tree stress.
More Than Just a Fertiliser
The Multiple Uses of SONIC Liquid Seaweed for Soil, Crops, & Livestock
- Seed Treatment – prepares seeds with microbes and natural growth hormones.
- Soil Conditioner – helps increase aeration, water holding capacity, and nutrients.
- Soil Mineraliser – offers naturally balanced organic minerals and microelements.
- Bio-stimulant – chelated micronutrients readily available for plants and animals.
- Foliar Spray – coats leaf in beneficial microbes, leaving no space for pathogens.
- Compost Activator – provides beneficial microbe boost to speed the break down of compost.
- Livestock Minerals – delivers balanced kelp nutrients and probiotics to optimise digestion.
Talk to us about the best supply option for your farm.
Seed Treatment with Liquid Seaweed Biological Fertiliser
Beneficial microorganisms, contained in SONIC Liquid Seaweed Biological Fertiliser, coat or inoculate the seeds, and are carried with them into the ground, stimulating soil fertility.
When microorganisms are present, they improve the soil and give seedlings the health and immunity they need to start their growth. Meanwhile, kelp seaweed is also high in organic phosphorus, which supports growth and vigor during early plant development.
SEAWEED FERTILISER FACT
Many liquid seaweed fertiliser products today are manufactured using an extraction process. The extraction process generally uses an alkali extraction agent, such as potassium hydroxide. This process inevitably denatures a lot of the original compounds found in seaweed, which are known to have many beneficial uses for plants.
For example, seaweed has a compound called betaine osmoregulators. When applied to plants, in its original form, these osmoregulators make plants a lot more resilient to drought stress. It allows the plant cells to regulate water much better, and require less water, which enhances the plants’ tolerance to stress. Betaine osmoregulators are lost using an alkali extraction method.
Cold processing, or natural fermentation, retains all the original compounds of seaweed, and delivers them to plants in a bio-available state. Read about Biological Fermentation Here.
Liquid SEAWEED BIOLOGICAL FERTILISER BENEFITS
Delivers Organic Minerals and Trace Elements
One key benefit of using Liquid Seaweed (Kelp) Fertiliser is its rich nutrient content. Seaweed is packed with essential minerals, including nitrogen, phosphorus, potassium, and trace elements such as iron, zinc, and magnesium. Because of the cold fermentation process, these essential nutrients are readily absorbed by plants, promoting robust root growth, improved flowering and fruiting, and overall plant vigor.
Contributes to Soil Structure
Liquid Seaweed Biological Fertiliser has the ability to promote better soil structure. When applied to the soil, under brown or green ground cover, the compounds present in seaweed help bind soil particles together, resulting in improved soil aggregation. The enhanced soil structure allows for better water infiltration and retention, reducing the risk of erosion and improving overall soil health.
Provides Natural Growth Hormones
When Liquid Seaweed Fertiliser is applied to plants, the natural growth hormones, such as auxins, cytokinins, and gibberellins, play a crucial role in regulating various physiological processes in plants, including cell division, elongation, and differentiation.
Enhances Taste, Colour and Nutritional Content of Food
One of the key advantages of using Liquid Seaweed Fertiliser is its impact on taste. It has been found that plants treated with Seaweed Biological Fertiliser have improved flavour profiles compared to those grown with chemical-based fertilisers. The natural compounds present in seaweed can enhance the overall taste and aroma of fruits, vegetables, and other edible crops.
In addition to enhancing taste, Liquid Seaweed Fertiliser also contributes to enhancing the colour and texture of food. The minerals and trace elements found in seaweed help plants develop vibrant colours, and improve the visual appeal of fruits and vegetables.
Moreover, Liquid Seaweed Fertiliser is known for its ability to enrich the nutritional content of food.
Seaweed Kelp is rich sources of essential minerals such as potassium, magnesium, calcium, iron, and iodine. When used as a liquid fertiliser for plants, these nutrients are absorbed by the crops and subsequently passed on to consumers when they consume these foods.
Improves Plant and Crop Resilience
Another key advantage of using Liquid Seaweed Biological Fertiliser is its ability to boost a plant’s immune system. Seaweed Kelp is rich in bioactive compounds such as polysaccharides, amino acids, and vitamins that stimulate the production of plant defense mechanisms. These compounds help plants to build stronger cell walls, activate defense genes, and produce antimicrobial substances that can fend off diseases and pests.
Liquid Seaweed Biological Fertiliser can also help in enhancing plant tolerance to climatic stresses such as drought, salinity, and extreme temperatures. Seaweed Kelp contains osmoprotectants that help plants retain water during dry periods or excessive salt exposure. Seaweed also contains antioxidants that scavenge harmful free radicals produced under stressful condition.
The organic nature of SONIC Liquid Seaweed Biological Fertiliser makes it an environmentally friendly choice for gardeners and farmers alike. Furthermore, it does not contain synthetic chemicals or harmful additives that can have negative impacts on soil health, the natural ecosystem, or water quality.
Click here to read ‘Key Benefits of Using Liquid Seaweed Biological Fertiliser for Plants’
Ready To Transform Your Soil?
Living Biological Fertiliser Solutions Made Fresh for Your Farm
Biological Fertiliser FAQs
Conventional synthetic fertilisers are designed to deliver nutrients rapidly, creating fast and predictable plant responses. When nitrogen, phosphorus, and potassium are applied in synthetic forms, plants often respond with quick greening and a surge in biomass.
Biological fertilisers, on the other hand, work in a fundamentally different way to conventional synthetic inputs. Rather than supplying nutrients in a readily available chemical form, they focus on supporting the living processes within the soil that naturally create fertility over time.
Read article Rethinking Soil Fertility: The True Meaning of Fertiliser
These products begin working immediately by stimulating soil biology and delivering bioavailable nutrients. Results vary depending on soil condition and management practices.
Early benefits such as improved seed germination and plant establishment can be seen quickly, while longer-term improvements—particularly in grazing systems—build over one to three years. In horticulture and orchards, growers often notice improved growth, quality, and extended shelf life of produce with regular use.
Read more about SONIC Biological Fertilisers
Liquid seaweed extracts, such as Seasol, are usually produced using chemical or heat extraction to concentrate certain compounds. While these products are widely used, the process can reduce some of the natural components of the seaweed. Seaweed biofertiliser, on the other hand, is cold fermented, preserving a wider range of nutrients and natural compounds in a form that supports soil biology and plant uptake.
Read Article – Liquid Seaweed Fertiliser Comparison: Ferment Vs Extract
We service all regions across Australia for both product supply and on-farm production systems. Fresh processed biological fertilisers are delivered nationwide.
For on-farm systems and training, we work with both local and remote operations. Where in-person visits aren’t practical, we provide live video training and guided setup to ensure you can confidently get your system up and running without a hitch.
We source both fresh and dried fish waste, generated after processing for human consumption, from a network of fish shops and processors handling ocean-caught fish across Australia. By utilising these by-products, we help divert organic waste from landfill and repurpose it into valuable liquid fish hydrolysate biological fertiliser.
Read article Turning Fish Waste Into Premium Hydrolysate Fertiliser
SONIC biological fertilisers can help balance soil pH over time by improving overall soil function. The microbes in our biologically fermented fertilisers enhance nutrient cycling and soil structure, which can help buffer pH fluctuations and create more balanced soil conditions.
Rather than directly changing soil pH like lime or other amendments, biological fertilisers work by supporting the natural processes that help maintain a more stable and productive soil environment.
Read article Adjusting Soil pH on Australian Farms (and Why Microbes Matter)
SONIC Liquid Fish and Seaweed Biological Fertilisers are used because they provide both plant nutrition and support for soil biology, helping improve overall soil health and plant performance.
Key benefits include:
• Providing fast-available nutrients for plant uptake
• Feeding and stimulating beneficial soil microbes
• Supporting nutrient cycling within the soil
• Improving root development and crop resilience
• Enhancing soil structure and long-term fertility
Liquid fish fertiliser is particularly rich in organic nitrogen and amino acids that support growth, while liquid seaweed contains trace elements and natural plant compounds that help with stress tolerance and overall plant health. Used together, they provide a balanced approach that supports both immediate plant needs and longer-term soil function.
Read article Top 3 Strategies To Get The Most From Your Biological Fertilisers
