Better fish FCR and
health in your RAS

The CarbonClear process improves fish FCR and health in RAS by removing the dissolved organic carbon by-products of digestion.

Struggling with any
of the following?

These are the symptoms that RAS farmers see every day. Most don’t know the underlying cause.

Density effect: all of the above symptoms worsen at higher stocking densities and improve at lower stocking densities, assuming flow rate stays constant.

These symptoms are caused by dissolved organic carbons (phenols) in the water which are a by-product of digestion. As they accumulate in a recirculating system, they quietly degrade water quality, fish health and ultimately fish growth.

Read the research behind this

Remove dissolved organic
carbons at the source.

The CarbonClear process uses activated carbon to bind and remove phenols but in a fundamentally more effective way than the industry standard.

1
Activated carbon binds phenols and dissolved organic carbons
Activated carbon is a well-established toxin binder, widely used and dosed straight into the water to capture phenols and dissolved organic compounds.
2
We put it in the feed, not the water
Instead of dosing activated carbon straight into the system water (the standard approach), the CarbonClear process includes it directly into the feed. That means binding starts at the source, inside the fish’s gut, before phenols have a chance to diffuse out and dilute into the full volume of system water.
3
The activated carbon is milled to a fine powder
To work inside a feed pellet, the carbon is ground to a fine powder (PAC — Powdered Activated Carbon). Finer particles adsorb far faster, which matters because the carbon has only a short window inside the fish’s gut. It also disperses evenly through the pellet and stays suspended in the water once excreted.
4
It keeps working after excretion
Once excreted, the activated carbon continues adsorbing dissolved organic carbons and phenols from the surrounding water, right up until it’s captured by standard mechanical filtration (typically a drum filter).
5
Everything gets removed together
The activated carbon and the organic compounds bound to it are the same physical particles. Mechanical filtration removes both in one step, no separate treatment stage required.

See the detailed trial data

Think this could be
affecting your system?

Here’s how to find out and what to do about it.

1

Test for phenols in your system.

Phenols can be notoriously difficult to test for, which is part of the reason why we believe they have gone undetected for so long. We’ll walk you through the exact testing process and what your results mean, so that you can confirm whether this is actually an issue in your system or not.

How to test your water

2

How can I access CarbonClear?

You have two options.

Ask your feed supplier

Reach out to your feed supplier and request that CarbonClear be included in the feed they supply you. Once you’ve made the request, we’ll organise the rest with your feed supplier directly.

Speak to us directly

If you want advice or further information, please reach out either over WhatsApp or by filling out the email form below.

Private. No spam.

Enquiry submitted. You’ll hear from us shortly.

Our team

Teagan Bok
Managing Director
Teagan Bok

Teagan leads AMT’s day-to-day operations, working directly with RAS farmers to bring CarbonClear to their systems.

LG
Co-Founder & Lead Scientist
Lawrence Grant

Lawrence leads the scientific development behind CarbonClear, drawing on 15+ years of experience and research into phenols, dissolved organic carbons and their impact on recirculating aquaculture systems.

AB
Co-Founder
Andre Bok

Andre co-founded AMT, bringing 20+ years of marine RAS operational experience to shaping the CarbonClear process.