WhichOne › DIY store & garden › plant › liquid co2 for aquarium plant

The best liquid co2 for aquarium plants in comparison

Guaranteed independent and reliable
Millions of satisfied users every year
Last updated on 12.07.2025

Filter

Sort

Filter:Brand:Reduced items only:

Best choice

API CO2 Booster Freshwater Aquarium Plant Treatment 473 ml Bottle

API

9,9

Check price

Show on Amazon

show more show less

Features

Promotes plant growth in freshwater aquariums
Adds essential carbon in a form plants can absorb from the water
Use daily in order to ensure lush, vibrant aquarium plants

£ 15.95

£ 15.25

Easy Life Easy Carbo Plant Fertiliser, 1 Litre

EASY LIFE

9,8

Check price

Show on Amazon

show more show less

Features

Essential for good plant growth
1 ml per 50 litres, up to 2 ml per 50 litres daily
Aquarium heavily planted 1 ml per 25 litres daily

£ 17.48

£ 15.82

£ 15.90

£ 17.24

£ 17.26

£ 17.26

AquaDesign CARBO 2500ML Aquarium Liquid Carbon Plant Fertiliser

AquaDesign

9,7

Check price

Show on Amazon

show more show less

Features

Ideal for boosting plant growth in aquariums
Daily dosage 1ml per 50L per day. Maximum dosage 2ml per 50L per day
Also available in 1000ml and 5000ml sizes

TNC Complete - Liquid Aquarium Plant Food/Aquatic fertiliser (250ml)

TNC

9% off

9,7

Check price

Show on Amazon

show more show less

Features

Ideal for high light CO2 or Carbon supplemented aquariums - alternatively search TNC Lite
Will not cause algae and is safe for shrimp, snails, other inverts and fish
Economic - Concentrated formula & integrated measuring bottle - 250ml will treat 2500 litres of tank water

£ 8.30

£ 7.42

Seachem Flourish Excel, 250 ml

Seachem

9% off

9,7

Check price

Show on Amazon

show more show less

Features

Bioavailable organic carbon source for the planted aquarium
Use as an alternative to CO2 injection or in addition to it
Model number 020987

£ 12.28

£ 8.99

£ 12.79

Tetra PlantaMin Universal Fertiliser - liquid iron intensive fertiliser for magnificent and healthy aquatic plants in the aquarium, monthly application, 250 ml

Tetra

36% off

free shipping

9,7

Check price

Show on Amazon

show more show less

Features

Vigorous plant growth is the best algae prevention
Promotes the formation of chlorophyll, thus ensuring rich green leaves

£ 8.61

£ 11.90

£ 12.60

Interpet Liquid Aquarium Plant CO2 Daily Carbon Boost for Healthy Plant Growth 125ml

Interpet

9,6

Check price

Show on Amazon

show more show less

Features

Keep your aquarium plants flourishing without encouraging unwanted algae
1 pump per 20L of aquarium water daily (this bottle is enough to dose a 60L aquarium for 3 months)
Interpet Plant CO2 provides plants with an aditional boost of CO2 to help promote lush, healthy growth
Harmless to filters and all species of fish, shrimp, invertebrates and plants

£ 8.48

£ 8.28

Fluval Plant Gro 250 ml

Fluval

9,6

Check price

Show on Amazon

show more show less

Features

For Freshwater use only

£ 12.99

£ 12.79

£ 13.05

£ 13.99

Recommendation

FZONE Aquarium Co2 Regulator Aquarium DC Solenoid Bubble Counter and Check Valve Plant Grow DIY CO2 System W21.8 Side Open Cylinder

FZONE

free shipping

9,3

Check price

Show on Amazon

show more show less

Features

Dual Big Gauge. 1.6 inch big dual gauge easy to read your cylinder inner and working Pressure
Updated Split-Type DC Solenoid. Newest 12 DC split-type solenoid instead AC models, more safe and stable.
High Precision Structure. This regulator is designed for the aquarium. High precision fine-tuning easy for co2 to be 1 bubble in 3 seconds. Upgraded sealing material avoid any leak
Bubble Counter and Tools Included. Together with bubble counter, you can read your co2 flow rate. Bubble counter with check valve function, stop water backflow to bottle. All installing tools included, make all goes easy
Class 1 Manufacturing Technology. Made of hard aluminum alloy, surface spraying treated. Pressure knob and fine tuning knob with knurled

£ 49.99

£ 58.49

AQQA Fish Tank Cleaner, 8-in-1 Electric Aquarium Gravel Cleaner, 30W Automatic Fish Tank Vacuum Cleaner for Water Change, Sand Wash and Filter

AQQA

free shipping

9,3

Check price

Show on Amazon

show more show less

Features

Efficient and Powerful Cleaning AQQA fish tank cleaner is equipped with 30W pure copper motor, 1800L H high flow rate pump motor, strong power and durable. The pump guarantees a strong current, enabling fast and thorough water changes, add water and mulm removal from the aquarium
8-in-1 Multifunction Aquarium Gravel Cleaner Duckbill suction head Scraping the tank, sucking fish poop Corner anti-sand suction head Collecting impurities from stones Brush head Brush off algae Bottom suction seat Standing in the aquarium for a quick pump Sand washing head Cleaning of fine sand by tumbling Shower can cool turtles, active turtle Filter cup with filter cotton Separate impurities and collect impurities Adjustable air tubes Increase dissolved oxygen in water
Adjustable Design The fish tank vacuum cleaner comes with 3 extension tubes and a quality 2m water hose, providing fexible adiustment to different aquarium heights. No traditional siphon water exchanger height difference limitation, easy to drain and fill water. Switch on cord for easy access
Easy to Install and Use Complete accessories, easy to assemble, just need to screw in or plug in the corresponding parts. You can freely assembled to meet your different needs. Please do not dry burn the pump, and regularly dismantle and wash the pump, quality assurance for 2 year

This ranking is created through algorithmic analysis of millions of products tailored specifically to your search. We aim to find the most suitable product for you based on manufacturer information and price. The ranking reflects our opinion and should serve as a good starting point for your purchase. We would like to point out that we have not tested the products ourselves and link to selected online shops and partners from which we may receive compensation.

You might also be interested in these liquid co2 for aquarium plants.

NT Labs Aquarium Liquid CO2 Boost, Aquarium Carbon Source, Aquascaping Accessory, Low Tech Aquascaping (100ml)

ENCOURAGE HEALTHY PLANT GROWTH All plants need carbon to grow. Aquatic plants obtain their carbon through CO2 dissolved in water. With Liquid CO2 Boost, plants will grow more vigorously, removing algae-causing macronutrients such as nitrate and phosphate.

~~£ 8.59~~ free shipping

Check price

JBL PROFLORA CO2 TAIFUN INLINE 19/25, CO2 diffuser, integrated bubble counter and backflow protection, for 200-800 l aquariums

Particularly effective membrane for high CO2 savings of up to 20 percent

free shipping

Check price

Aquarium CO2 System Set, 1Set Pro Tube Valve Gauge Bottle Cap Kit Fish Tank DIY CO2 Kit, CO2 DIY Kit for Planted Tank Fish Tank Aquarium Aquarium Tank

Co2 aquarium kit,Easy to operate and designed for low cost planted tank use,to provide your aquarium plants a CO2 environment for better growing

free shipping

Check price

Vogueing Tool V-AP-022 Carbon Dioxide Diffuser CO2 Atomizerr Refiner for Aquarium Plants Fish Tank Brown-Large

Simple design and super micro hole atomization

~~£ 13.46~~

Check price

Legend C5 Eos Liquid Carbon 100ml, 250ml, 500ml, 1000ml CO2 Plant Fertiliser Aquarium Fish Tank (5000mL)

Bioavailable organic carbon source for the planted aquarium

free shipping

Check price

ARKA - Bio-CO² - carbon fertilizer for plants with bacteria (473ml.)

BIO-CO2 Bio Co2 is a microbial carbon source. It allows aquarium plants an improved nutrient uptake and promotes plant growth and colourfulness of freshwater plants.

Check price

LYEAA CO2 Generator System Carbon, 1L/2L Carbon Dioxide Reactor Aquarium DIY CO2 Cylinder Generator System Kit for Plants Aquarium Aquarium CO2 Generator System Kit

Cost-effective, simply by self-producing pure CO2 continuously through chemical reactions, saving you money

free shipping

Check price

THE 2HR AQUARIST All-in-one Aquarium Plant Fertilizer APT 3/ Complete (300ml)

-100% Comprehensive macro + micro formula of N, P, K, Iron and Traces in our proprietary Capstone RatioTM

free shipping

Check price

Aquadip Liquid Carbon 1000ml Tropical Coldwater Aquarium Fish Tank Plant Fertiliser Treatment

Aquadip

free shipping

Check price

CO2 Diffuser Stainless Steel CO2 Atomizer Bubble Counter with U-Shape Connecting Tube for Aquarium Plants Water Grass(40cm)

Easy Installation The co2 diffuser aquarium is easy and convenient to install and use by just hanging it besides the tank, every can install it easily without instruction.Package Included 1 x CO2 Diffuser Or 1 x Atomizing Nozzle

free shipping

Check price

2 Pack Drop Checker, Aquarium CO2 Tester Monitor Glass Drop Checker Aquarium CO2 Detector for Planted Fish Tank

Proper Size The size of aquarium co2 monitor is 5*5cm. With suction cup, easy to attach to the wall of fish tank.

Check price

Superfish Colombo CO2 Basic Kit - 61009

CO2 Basic Set for aquariums up to 5Genuine quality pet item from the UK litres.

free shipping

Check price

The best liquid co2 for aquarium plants in comparison

Guaranteed independent and reliable

Features

Features

Features

Features

Features

Features

Features

Features

Features

Features

You might also be interested in these liquid co2 for aquarium plants.

Our offer