General Hydroponics®, KoolBloom® Dry, 2-45-28, Ripening Formula (16 LBS.) cleanroom The sensor comes factory calibrated

The sensor comes factory calibrated for precise CO2 readings and utilizes low voltage technology to avoid radio frequency interference (RFI) from electronic ballasts

Tested by NSF 42 to reduce 97% of chlorine

and other natural ingredients

the main unit and easy to replace AAA batteries

General Hydroponics®, KoolBloom® Dry, 2-45-28, Ripening Formula (16 LBS.) cleanroom The sensor comes factory calibratedKoolBloom is a highly concentrated nutrient supplement that promotes abundant flowering and facilitates ripening in annual flowers and herbs. KoolBloom is rich with phosphorus and potassium and contains precise amounts of ripening elements. KoolBloom is to be used only at the very end of a plant's life cycle and will help build larger, heavier fruits and flowers.