Flying Skull introduces Essential Flora Extract, a highly soluble and concentrated (1/2 mL per gallon) natural additive formulated to deactivate chlorine and chloramines. As with all Flying Skull products, great care has been taken to make sure that the chemistry behind Essential Flora Extract will work without causing any adverse chemical reaction with any other Flying Skull product. Essential Flora Extract has been successfully used in all hydroponic systems including Deep Water Culture without a negative impact to the plants delicate root system. Z7 can easily breakdown the natural Essential Flora Extract formula for protection from inanimate slime. It is added to the nutrient from time of clone to harvest. While Essential Flora Extract will benefit all water supplies it is not sold as a plant food.