Liquid Fish and Seaweed Biofertiliser for Australian Farms
Buy Bulk Biofertiliser or Learn to Make it On Your Farm
Made Fresh for your Farm
DIY Biofertiliser, Made Easy
SONIC Liquid Fish and Seaweed Biofertiliser is a cold-fermented fertiliser made with Australian seaweed (kelp), ocean fish (waste from processing) and beneficial microbial cultures. Designed to support soil biology, root development and plant growth, it can be used for seed treatments, soil applications and foliar spraying throughout the growing season.
Available as made-to-order bulk liquid concentrates, or produced on your farm with a SONIC DIY System, including ingredients, training and ongoing support.
Why Australian Farmers Are Choosing On-Farm Biofertiliser Production
Producing biofertilisers on-farm isn’t just about reducing costs. It’s about gaining greater control over your farming operation.
Our complete systems are designed to make on-farm production practical, repeatable and scalable. We supply the production equipment, ingredients, training and ongoing support so you can produce consistent, high-quality liquid fish and seaweed biofertilisers with confidence.
On-farm production helps farmers;
- Reduce Fertiliser Costs
- Lower Freight Costs
- Minimise Reliance on Supply Chains
- Reduce Packaging Costs and Waste
- Build Soil Health Naturally
Quick Quotes, No Hassle
Biofertiliser Supply Options
MADE-TO-ORDER PRODUCTS
We make your liquid fish and seaweed biofertiliser and deliver it to your farm.
Product Price Range:
$2.30-3.90/L
Includes: Finished liquid concentrate product, ready to dilute and apply.
Size Options: Min. 180L per product (9x20L drums) /1,000L IBC per product
Freight: Quoted for delivery to your farm.
Availability: Fermented to order. Allow 10–12 weeks for processing.
*Indicative AUD. Your quote confirms the total cost, GST, freight and inclusions.
ON-FARM PRODUCTION & TRAINING
You make your liquid fish and seaweed biofertiliser with our production system and guidance.
First Batch (Starter Package):
$1.80-3.50/L
From $1,885 for a 540L System
Includes: First batch raw ingredients, assisted setup, 1:1 training and VIP support throughout three batches. Containers and decant equipment not included.[Source locally or buy from us →]
Every Batch After:
$1.00-1.20/L
*Indicative AUD. Your quote confirms the total cost, GST, freight and inclusions.
- Calculate Your System Size
A DIY Biofertiliser System for Any Size Farm
Access lower costs, fresher products and full control over your biofertiliser supply.
Producing your own biological fertilisers with a SONIC Biofertiliser System—helps you cut costs and reduce reliance on imports and freight. Supplied with all the raw ingredients and one-on-one training, it provides a practical way to build soil health and keep your fertilisation program efficient and self-reliant.
Eco-friendly BIOLOGICAL SOLUTIONS FOR SOIL, SEEDS, CROPS, AND LIVESTOCK
- Liquid Fish Biofertiliser (Hydrolysate)
- Liquid Seaweed (Kelp) Biofertiliser
- Liquid Seaweed (Kelp) Livestock Feed Supplement
Why Buy It When You Can Brew It?
Call 0423 139 578
Get Tailored Advice for Your Farm
Natural Inputs. Naturally Good Results
For decades, farmers have trusted fish and seaweed as natural fertilisers that activate soil biology and drive stronger growth and healthier soils.
At SONIC Natural Farming, we use cold biological fermentation and resilient Aussie microbes to make 100% natural liquid biofertilisers and livestock supplements. They provide a microbially active, bioavailable source of ocean-derived minerals for your soil and crops.
Support Your Soil Biology – Naturally
Living Fertilisers To Build Living Soil
Feed the soil life, not just the plant—and support healthier crops, better moisture retention and more consistent performance.
Made fresh and microbially active, our liquid fish and seaweed biofertilisers feed and stimulate soil biology. They suit regenerative farming systems and support nutrient cycling, root development and plant function.
Discover the Value of Cold Fermentation
FAQs
SONIC Biofertiliser Solutions FAQs
SONIC Liquid Fish and Seaweed Biological Fertilisers feed both your plants and your soil, so you get short-term growth support and long-term gains in soil health.
Farmers typically use them to:
- Give plants fast-available nutrients
- Feed and stimulate beneficial soil microbes
- Improve nutrient cycling in the soil
- Strengthen root development and crop resilience
- Build soil structure and long-term fertility
Fish is rich in organic nitrogen and amino acids that drive growth. Seaweed adds trace elements and natural plant compounds that help crops handle stress. Used together, they can cover both what your plants need now and what your soil needs long-term.
See it on a real farm: Simon’s Pasture Improvement Journey →
Read article Top 3 Strategies To Get The Most From Your Biological Fertilisers
It mainly comes down to how much liquid fish and seaweed you use and how hands-on you want to be.
Made-to-order is the better fit if you:
- Use smaller volumes, or are trying biofertiliser for the first time
- Want a finished product delivered, ready to dilute and apply
- Don’t have the time or space to run your own batches
Our liquid fish and seaweed is made-to-order, priced by volume – $2.30–3.90/L, with a 180L minimum per product.
Making your own is the better fit if you:
- Want the lowest cost per litre (from $1.00–1.20/L after your first batch training)
- Want to cut freight costs and rely less on outside supply
- Like the idea of producing fresh biological products on your own farm
Starter packages start from $1,885 for a 540L system, with 1:1 training and VIP support through your first three batches.
Not sure? Book a free strategy call and we’ll help you work out which option saves you more.
Book a free strategy call → | Calculate Your Biofertiliser Usage →
Yes. SONIC biofertilisers are 100% natural and can be added to most farming programs, whether you’re fully regenerative or just starting to cut back on synthetic inputs.
Works well with:
- Other natural inputs, such as compost, manures, biodynamic preparations and natural amendments
- Seed treatments, soil drenches and foliar sprays
- Regenerative management practices
Keep separate from:
- Synthetic fertilisers, urea and chemical-based products. Mixing them in the same tank reduces the benefit, because these products can harm the beneficial microbes in your biofertiliser.
Yes. We supply farms across most regions of Australia, from our base in Dorrigo, NSW and Central Coast, NSW.
Made-to-Order Biofertiliser:
Freight is quoted to your farm based on your location and order size. Because you’re shipping finished liquid, freight can be a big part of the total cost, especially for remote farms or large volumes.
DIY Biofertiliser Systems:
We ship dried raw ingredients rather than liquid, which is much lighter and cheaper to freight. Containers and pumps can usually be bought locally, and training can be done by live video, so wherever your farm is, you can get started.
Your quote will confirm freight costs and delivery timing for your area.
Farm Case Studies
Simon’s Pasture Improvement Journey
Meat Me At The Gate
Officer South, VIC, Australia
The Beard family’s beef cattle farm combines livestock production with fodder production, including hay, silage and multispecies forage crops to support year-round feed availability.
Like many Australian beef producers, the business faced increasing pressure from rising input costs and declining responses to traditional fertiliser programs.
“My surprising one was the animal benefit that I saw.”
Yeah, this is actually having a pretty good effect here.
“Neighbours are asking why our paddocks are green while theirs are brown,”
I think it’s doing a fantastic job! We have had the best year with the most tree stress.
Natural Farming Resources
Where to Learn More and Get Support