Towards less chemicals, energy and water
Clean RAS water. More oxygen for your fish.
Bio-Z beads remove phosphate, ammonia, nitrite and nitrate in one step, so your tanks don't need a biofilter competing with your fish for oxygen. Made from upcycled spent grain and returned to the soil as fertiliser.
One bead, four nutrients
PO₄
Phosphate
NH₃
Ammonia
NO₂
Nitrite
NO₃
Nitrate
Drop-in mesh bags. No bacteria to establish, no extra aeration for a biofilter, no chemical dosing.
The problem
Your biofilter is breathing your fish's oxygen.
Oxygen competition
Nitrifying bacteria in the biofilter consume dissolved oxygen around the clock, the same oxygen your stock needs to grow.
Nutrients build up
Biofilters turn ammonia into nitrate but leave nitrate and phosphate behind, so farms fall back on frequent water exchange.
Slow and fragile
Bacterial colonies take weeks to establish and can crash with temperature, salinity or stocking changes.
How it works
From brewery waste to clean water to fertiliser.
Bio-Z is a novel material upcycled from spent grain, a food-industry by-product that would otherwise be incinerated. Nothing in the loop is wasted.
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01
Spent grain
Collected from food and beverage manufacturers instead of being burned.
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02
Bio-Z powder
Upcycled through our proprietary green-chemistry process.
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03
Beads in the tank
Formed into beads and placed in mesh bags in the water loop.
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04
Collected & recharged
We swap spent beads, recharge them and bring them back for reuse.
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05
Back to the soil
At end of life, nutrient-loaded beads become a fertiliser.
Why Bio-Z
Everything a biofilter does, minus what it costs you.
More oxygen for fish
No bacterial colony consuming dissolved oxygen, so more of it goes to your stock.
All-in-one removal
Phosphate, ammonia, nitrite and nitrate handled by one material, not a chain of treatment steps.
Less water exchange
Removing nitrate and phosphate means less fresh water in and less nutrient-rich discharge out.
Circular by design
Made from food waste, reused across several cycles, and finished as fertiliser.
For fish & prawn farms
Try it on your own tanks first.
Built for recirculating aquaculture systems, freshwater and seawater. We run a pilot alongside your current setup so you can compare water quality and dissolved oxygen side by side.
Water check
We test a sample of your tank water and size the dose for your system.
3-month pilot
A Bio-Z tank runs next to a biofilter tank. You see the results on your own farm.
Monthly per-tank subscription
We deliver fresh beads, collect used ones and recharge them. No equipment to buy or maintain.
Where we are today
- Validated in the lab on real wastewater from Singapore RAS farms
- On-farm trials being set up with local fish farms
- Research collaboration with a Singapore aquaculture research centre
- Spent grain supply secured from a global food manufacturer
For investors & partners
Aquaculture is how the world will source protein. Water is its bottleneck.
Beachhead: Singapore RAS
Land-based fish and prawn farms where water quality and oxygen directly drive yield.
Next: Southeast Asian hatcheries
Expansion to shrimp hatcheries in Vietnam, Indonesia, Thailand and Malaysia.
Recurring revenue
A per-tank subscription with bead recharge keeps customers on a service, not a one-off sale.
[YOUR ROUND, e.g. "We're raising our pre-seed round."] Request our investor deck.
Contact the founderAbout Biozimma
Green chemistry, taken from lab to farm.
Biozimma was founded in Singapore by a green chemist with a PhD from Nanyang Technological University in food waste valorisation. Earlier work by our founder turned food waste into an antimicrobial compound later used in face masks distributed nationwide in Singapore.
Our founder previously co-founded and exited an upcycling company. Biozimma continues that work, focused on aquaculture as a sustainable protein source.
Let's talk about your water.
Farm owners, investors and research partners: tell us a little about you and we'll get back within two working days.
Singapore