Evolution CO2 Control Unit - PPM Controller for Bottled CO2 Systems
Best for: growers running bottled or gas CO2 enrichment who want automatic PPM control instead of guessing dosing by eye.
Our thoughts
CO2 enrichment only pays off if you're actually holding a consistent level, and that's hard to do by hand. This unit monitors the room and opens or closes the CO2 supply automatically to hold your target PPM, which takes the guesswork out completely. It pairs with Eco-Technics' own fan speed controller too, which is handy if you're running a non-sealed room.
The Evolution CO2 Control Unit from Eco-Technics is built to manage bottled CO2 supply automatically. It continuously monitors CO2 levels in the grow room and adjusts the gas supply to hold whatever target PPM you set on the controller, rather than requiring manual dosing or guesswork. Eco-Technics recommend around 1000 to 1200 ppm for optimum results in most flowering crops.
It's also compatible with the Evolution Digital Fan Speed Controller, which makes it a workable solution for non-sealed rooms too, since the two units can work together to balance CO2 enrichment against extraction.
How it compares
CO2 controllers for bottled/gas systems are a fairly established category, and this holds its own against the better-known names.
- Like Titan Controls' Atlas range of CO2 controllers, it gives you a set-and-monitor PPM target rather than manual valve adjustment.
- Against a basic regulator-only setup such as those paired with CO2Boost systems, this adds the automatic monitoring and control layer on top, so the room holds a level rather than drifting.
- Its compatibility with Eco-Technics' own fan speed controller gives it an edge for growers wanting a matched, non-sealed room setup rather than mixing unrelated brands.
You're paying for the automation, not just the regulator, which is where the real value in CO2 enrichment comes from.
Usage guidance
CO2 control only works if the rest of your setup supports it, so a bit of planning helps.
Setting your target PPM
Set the desired PPM on the controller, around 1000 to 1200 ppm is the recommended range for most flowering crops.
Sealed rooms
In a fully sealed room, the controller can maintain PPM levels efficiently since there's minimal loss to extraction.
Non-sealed rooms
Pair with the Evolution Digital Fan Speed Controller so extraction and CO2 dosing are balanced rather than working against each other.
CO2 source
This unit controls the supply from a bottled or gas CO2 source, you'll need a regulator and solenoid feed set up alongside it.
Technical specifications
- Function: Automatic CO2 PPM monitoring and control
- Recommended target range: 1000 to 1200 ppm
- Compatible CO2 source: Bottled or gas CO2 systems
- Compatible accessory: Evolution Digital Fan Speed Controller
- Suitable rooms: Sealed and non-sealed grow rooms
- Brand: Eco-Technics
Who this is for
- Growers running bottled CO2 who want automatic control rather than manual dosing
- Sealed room growers looking to maintain a consistent enrichment level
- Non-sealed room growers who also run Eco-Technics fan speed control
Not needed if you're not running supplemental CO2 at all, this is specifically for enrichment setups.
Our take
CO2 enrichment is only worth doing properly, and this unit is what makes "properly" achievable without babysitting the room. It's a sensible investment for anyone already committed to bottled CO2.
Worth picking up if you're serious about squeezing more out of a CO2-enriched flowering room.
