Active Air In-Line Booster Fan Fan Size:6" Fan Start using Liquid KoolBloom™ during

Start using Liquid KoolBloom™ during the transitional period between vegetative & flowering phases

For outdoor applications in soil

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The specialty enzymes used in the formula produce a sour

All Covert Filters come with a reusable pre-filter that will filter out the large particles before they enter the carbon bed which significantly extends the life of the virgin activated carbon

Active Air In-Line Booster Fan Fan Size:6" Fan Start using Liquid KoolBloom™ duringActive Air Booster Fans can be mounted in line with your existing duct work to increase airflow. Available in 6", 8" and 10" models. They are quiet running, are made with UL recognized components, and include an 8', 120v power cord.