Professional CO2 Fertilisation System

Suitable for tanks up to 200 litres

Nutrafin CO₂ Natural Plant System

"Release the Natural Beauty of your Planted Aquarium"

A beautifully planted aquarium creates a stunning focal point for any setting.  Live aquatic plants bring a living, breathing, exquisite part of nature into your home.  

• It's easy... The CO₂ Natural Plant System helps you achieve beautiful, thriving live aquatic plants, and ultimately, a healthier aquarium.
• Visible results in just 15 days... when comparing plant systems using CO₂ versus those that don't, the differences are very apparent.  Most rapid growth plants obtaining CO₂ injection, are more lush, colourful and grow faster

How it works

This system is designed to supply any aquarium with a safe, economical, and efficient method of providing nature's most powerful carbon source for plants.  Employing a natural fermentation process for CO₂ eliminates the need for inconvenient pressurized cylinders.  It allows quick, easy, and affordable refills of ingredients to provide continuous CO₂ for a 3-4 week period.  The special fermentation canister was developed to support consistent carbon dioxide output.

Designed with Safety in mind

The fermentation process creates pressure, which in turn pushes the CO₂ bubbles into the aquarium.  A patented "Pressure - Release Safety Cover" was designed to prevent the internal pressure in the canister from exceeding safe levels.

The System:

1. All-natural Activator and Stabilizer ingredients are added to sugar and water in the Fermentation Canister.
2. Once sealed, fermentation commences.  As CO₂ forms, pressure builds, creating CO₂ bubbles that travel through CO₂ -resistant tubing into the aquarium.
3. There, the bubbles encounter the CO₂ Bubble Counter/Diffuser, the key to efficient CO₂ diffusion into the water.  The CO₂ bubble follows a patented 3-Dimensional, extended path.  As it travels within the unique matrix, the bubble becomes smaller and smaller, finally disappearing almost entirely.  This indicates that CO₂ has fully dissipated into the water.

For Uniform Release of CO₂

• The Activator contains specially selected micro-organisms which trigger alcoholic fermentation of the sugar and create reliable production of CO₂.
• The Stabilizer slows down and prolongs reaction time, to support consistent performance.

Replacement Activator and Stabilizer packets guarantee the integrity and performance of the CO₂  Natural Plant System.

Refill pack contains

3 sachets of Activator

3 sachets of Stabiliser 

DUPLA CO2-Set Omega

• Natural source of carbon dioxide
• Optimum efficiency
• Capacity for approx. 1 month
• Suitable for all aquariums up to 150 litres
• Refills available

CO2 supply provided by the 1 litre reaction chamber which is situated outside of the aquarium. CO2 distribution within the tank is carried out by the power head which is provided in the kit. CO2 production from the natural ingredients last approx 30 days

Carbon Dioxide Supply without Gas Bottles

The Zac Carbo Plus consists of an electronic controller which is fitted outside of the aquarium, and a Stainless Steel and Carbon Sandwich which sits in the water. 

Guarantee : 2 years on the control unit, 6 months on the sandwich

Please note : the carbon plate is considered a "Consumable Item" by the manufacturer and is therefore not covered under any granted guarantee

Installation Instructions

The Carbo Plus unit must be securely fastened with the supplied bracket next to or under the aquarium. For use in ponds, the appliance may only be fitted in dry rooms. Simply connect the carbon plate assembly to the right-hand jack on the controller and put the plug of the electronic controller in the mains socket. Fasten the carbon plate assembly with the suckers to the position that you want, standing or lying in your aquarium. Do not bury in the aquarium substrate. If you use a pH meter, submerge the electrode as far away as possible from the Carbo.

With the carbon plate submerged as deep as possible, adjust the CO2 supply with the control knob (0 = off). Each of the LED's corresponds to approximately 10% output. We also recommend testing carbonate hardness regularly. Furthermore, a weekly partial water change of approximately 20 - 25% is also important for constant carbonate hardness. On using for the first time or with a new carbon, please use the lowest setting, as the carbon is very reactive in the beginning.

IMPORTANT: By generating carbon dioxide, you lower the pH of the water. You should therfore start with the lower level and increase output daily by no more than one graduation mark.

When the appliance is working, it generates very fine gas bubbles which rise upwards. a whitish limescale deposit settles on the stainless steel clip. This is normal and the thickness of the deposit depends on carbonate hardness. This deposit should be removed regularly.

Experience shows that for a 240 litre aquarium, one carbon plate is sufficient for 2 months under maximum load. Ideally you can control the lighting and Carbo Plus using a timer (switched off at night). In this way you can double the service life of the carbon plate.

IMPORTANT: The appliance can only operate in fresh water. Once the carbon plate has been in contact with water, it may not be allowed to dry out: it must be kept wet (with water in a plastic bag or similar).

How it works

Water is converted into hydrogen and oxygen by electrolysis. The hydrogen rises up and the oxygen combines with the carbon in the carbon plate to form carbon dioxide, most of which dissolves immediately.

Caution: When connecting up a new carbon plate or using the appliance for the first time, please use a low setting because the carbon plate is very reactive in the beginning.

Changing the carbon plate

The red LED lights up when the CO2 carbon plate has been used up, if no other plate is connected or if the plate is not submerged properly. To change the carbon plate, simply take the stainless steel clip out and then the carbon plate. The material may possibly have become brittle and may crumble into pieces. Every replacement carbon plate is accompanied by a new contact plate, which may also have to be replaced in the case of oxidation.

Position the new plate at the opening of the upper silicon cap. Now put the new carbon plate in the housing and close the stainless steel clips. A completely new carbon plate assembly may have to be connected up to the controller after 12 - 14 months because of the electrolysis process.

Technical Data

Input: 230 volts / 50Hz
Working voltage: 5.5 - 20V
Controller: 19.5cm x 10cm x 4.5cm
Sandwich: 21cm x 6cm x 2.5cm
Carbon plate: 18.5cm x 6cm x 0.8cm
CO2 per hour: 0.29g
CO2 quantity in 2 months: 420g
Power consumption: 2 - 22.5 watts

This set provides everything the aquarist needs for a good and quick start with CO2 fertilisation in his aquarium. The Dupla CO2 Set Delta includes the pressure reducer fitting Delta complete with 100 bar pressure gauge. The fitting Delta reduces the cylinder pressure from approx. 60 bar, to a constant working pressure of 1 bar. The CO2 Set Delta also includes a CO2 atomiser (with integrated non-return valve) which evenly distributes the CO2 gas within the water, the permanent CO2 visual test, and all necessary tubing etc.

Suitable for tanks up to 400 litres

CO² Cylinder is NOT included

This small CO2 test indicator fits inside the tank with part of it under the water. The reagent within the test reacts with the water to give a colour change within the tester which indicates the level of carbon dioxide within the tank water

Permanent test should be refilled at least once a month

Supplied with 10ml of Reagent, and colour indicator