CO2 Enrichment

Carbon Dioxide can be depleted rapidly in an indoor environment, causing plant growth to slow down or even stop. The most basic approach is to ensure sufficient and consistent ventilation and air exchange in the garden area. (See Ventilation & Air Exchange products). Proper ventilation should provide normal outdoor or household CO2 levels of about 300 parts per million (ppm). However, many indoor or greenhouse gardeners purposely add CO2 to the air to increase rates of photosynthesis. CO2 can be added using bottled CO2, compressed gas available at industrial welding or gas supply companies. It may also be added to larger areas using CO2 generators, which burn liquid propane or natural gas to create CO2.

CO2 Enrichment Systems for CO2 Bottles/Tanks

Hydrofarm CO2 Enrichment System

This System is similar to the CAP CO2 system, but has a lower flow rate to release CO2 more slowly. This unit is suitable for small garden areas where air is not exhausted or exchanged frequently. Requires 15-30 minutes to release the necessary amount of CO2. Standard timer and 18 ft of vinyl tubing are included.  $169.99

CAP CO2 Enrichment System

This System has a the ability to provide a much higher flow rate than the Hydrofarm CO2 controller, making this the reccomended system for larger gardens that need to fill quickly. This System does not come with a timer or tubing. $159.99

Digital Timer

This programmable timer will run for as little as one minute, with up to six different settings every day. A battery backup remembers your settings if the power supply is interrupted. 1-year warranty. $29.99

CAP CO2 Generators

A specialized generator burns a controlled flame to release carbon dioxide into the environment. This method produces the lowest cost per unit of CO2- less than half that of bottled gas! CO2 generators are available for a natural gas or liquid propane fuel supply. Generators are sold according to the volume of CO2 produced per hour. 2-year limited warranty, 90-day warranty on electrical components. Please email for additional information.

AHL stocks LP only but can special order or drop ship natural gas models. Generators can also be calibrated for specific elevations over 3500'. Let us know when ordering if you are below 3500' or above 6500', and what the approximate elevation is.

CAP Gen-1 LP (expands from 1 to 4 burners), $409.99

CAP Gen-2 LP (expands from 5 to 8 burners), $579.99

CAP CO2 Generator expansion Burner, each, $29.99

CO2 Test Kit

Simple testing device to determine the level of CO2 in your atmosphere. Includes two test tubes, each good for a single test.  $19.99

Replacement CO2 Test Tubes, each...$5.99

Control Wizard CO2 Monitor/Controller

This economical combination automatically maintains CO2 levels at 1500 ppm. Set point is not user adjustable. Unit does not have a digital display to indicate current CO2 level. $499.99

Fuzzy Logic PPM 2a CO2 Monitor and Controller

This controller monitors and regulates the CO2 level of a room with an extreme degree of accuracy. It virtually eliminates CO2 waste and works with both CO2 generators and bottled gas. This comes with a 3 year warranty.

Fuzzy Logic PPM 2a CO2 Monitor and Controller, $689.99