Jack's Nutrients 12-4-16 RO, 1kg, 2.2 lb Top Dress These Flange Kits are used

These Flange Kits are used to vent air through a wall or ceiling

Essential component in the line of nutrients like Grow and Bloom

increase yields and enhance quality in potting soil grown plants during the flowering stage of their life

then kiln fired at high temperatures to cause the clay to expand into tough

Jack's Nutrients 12-4-16 RO, 1kg, 2.2 lb Top Dress These Flange Kits are usedFor the Purest in you. This one part nutrient blend is designed for crops grown in very low alkalinity waters such as reverse osmosis (RO) water, rainwater, and distilled water. Formulated utilizing the innovative raw materials to reduce pH crash while delivering all the nutrients essential for vigorous plant growth.