01268 799828

Grotech Online

Hydroponics Specialists

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Therm-B1 Videos



Temperature and humidity are very important for healthy plant growth and can be controlled with a capable fan and fan controller. The heat from the lights is used to maintain an ideal temperature while a fan controller controls humidity and replaces stale air with fresh air and CO2. C02 controllers and TNB Enhancer bottles can provide extra CO2 if neccesary and a quality carbon filter will remove any unwanted odours. 


We sell a range of SMS fan controllers and in-line fans for any situation, as well as co2 controllers and carbon filters from Cann and Rhino. We have been selling these filters for years and feel they are the best in their class. We also have a wide range of ducting and duct fittings, humidifiers and Ona air fresheners.


C02 Enhancer

Just add warm water and shake to active the bottle. When shaken once a day It will treble the co2 levels in a 1.2 x 2.4 grow tent for 2-3 weeks. You can see the co2 come rushing out every time you shake. Its completely natural and there are no bad odours.

PRODUCT CODE: TNB 25.00The Enhancer | The Enhancer Co2 bottle 300.00The Enhancer | The Enhancer C02 bottle x 15

Unis co2 controller and regulator

Co2 controller from unis renowned for its ease of set up and simplicity to use

PRODUCT CODE: UNIS 179.00Unis | Unis co2 controller and regulator

Hot box Co2 generator

Hotbox CO2 Generators enrich the atmosphere and encourage plant growth. There are three models to choose from suitable for growing areas ranging from 20m to 4000m Hotbox CO2 Generator Click for larger image Increase CO2 to 1000 ppm achieve optimum growing environment Low running cost - runs on propane or natural gas all of the CO2 Generator are supplied as propane with a conversation kit for natural gas Easy installation simply attach to supply plug in and switch on Robust lightweight construction durable yet easy to move around

PRODUCT CODE: Co2 generator

Co2 Test Kit

For measuring the ppm of co2 in an environment .

PRODUCT CODE: CO2TC 30.00Co2 Test Kit | Each

Exhale CO2 bags

ExHale cultivates CO2 24 hours a day with no need to refill bottles or use expensive CO2 production units. The power of ExHale lies in the mycelial mass inside the vented cultivator. This mycelial mass cultivates CO2 and the microporous breather patch releases CO2 continually for up to 6 months.

PRODUCT CODE: EXH 29.95Exhale | Exhale co2 bag
Grotech Hydroponics
Unit 20-21 Sadlers Hall Farm,
London Road, Basildon, Essex
T: 01268 799828
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