Active Air 2-Way Meter pH/Moist

Gardeners can conveniently test moisture and pH levels with the handy Active Air 2-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist). pH readings between pH 0 (acidic) and pH...

Active Air 45 Pint Dehumidifier

Active Air Dehumidifiers Improve the air quality in your grow room with this Active Air Energy Star 45-Pint Dehumidifier. It features easy-to-read digital electronic controls, including auto...

Active Air Black 6" Clip On Fan

Active Air 6in Clip Fan, 5W 5W brushless motor for longer life Energy efficient, low voltage Ultra quiet operation Great for small gardens Clips to flood tables for air flow under foliage

Active Air Fan Speed Controller

Hydrofarm's Fan Speed Adjuster was designed especially for centrifugal fans. This means it will help prevent damage to fan motors, ensuring longer life. (Meant for use with brushless motors, and...

Active Air Hygro-Thermometer Large

Overview You'll find multiple uses for and multiple places to put this Active Air hygro-thermometer. Check the large number LCD display from a distance, and move it around with you as you go about...

Active Air Indoor-Outdoor Thermometer w/ Hygrometer

Active Air's indoor-outdoor thermometer gives you more. Made of sturdy materials to stand up to any kind of weather Mother Nature might throw your way, as well as the climate of your indoor grow...

Active Air Portable Air Conditioner 14,000 BTU

Keep your cool as summer heats up with the Active Air Portable Air Conditioner, available exclusively from Hydrofarm. This air conditioner’s portability makes it ideal for growers who...

Active Air Premium Ducting, 4" x 25'

Active Air Premium Ducting is made of tough 3-ply aluminum foil laminate. It is designed for air-cooling and can be used in different forms of heating and ventilation applications. This product is...

Active Air Premium Ducting, 6" x 25'

Active Air Premium Ducting is made of tough 3-ply aluminum foil laminate. It is designed for air-cooling and can be used in different forms of heating and ventilation applications. This product is...

CO2 Tank 20 lb Swap Refill- *In-Store Only*

Store a large supply of carbon dioxide in a safe, portable container with our 20-pound all aluminum CO2 tank. This is a SWAP REFILL ONLY.  Just bring in your empty 20 lb CO2 Tank with Handle and...

CO2 Tank Aluminum 20 lb - Empty - *In-Store Only*

Store a large supply of carbon dioxide in a safe, portable container with our 20-pound all aluminum CO2 tank. Sold empty (fill with your own supply), the tanks stand 23.2" high and the slim design...

CO2 Tank Aluminum 20 lb - Full - *In-Store Only*

Store a large supply of carbon dioxide in a safe, portable container with our 20-pound all aluminum CO2 tank. Sold full, the tanks stand 23.2" high and the slim design won't take up much space in...

Duct Fan Active Air 6" Inline Booster

Active Air Inline Booster Fans are available in 6", 8", and 10" models. Active Air fans are quiet running, made with UL-recognized components, and include an 8', 120V power cord. 

Hydrofarm CO2 Injection System 0.2 - 2 CFH w/ Timer

Active Air climate control products are available for a variety of indoor growing applications. Active Air fans, CO2 systems, filters, and other products in the line have been custom-engineered for...

Hydrofarm CO2 Injection System 2 - 20 CFH w/ Timer

Active Air climate control products are available for a variety of indoor growing applications. Active Air fans, CO2 systems, filters, and other products in the line have been custom-engineered for...